sinanisler
1526 lines
52 KiB
JavaScript
1526 lines
52 KiB
JavaScript
/*
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===========================================
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ACCESSIBILITY WIDGET
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A comprehensive web accessibility tool
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===========================================
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*/
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// ===========================================
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// CONFIGURATION VARIABLES
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// ===========================================
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// Default configuration - can be overridden by user
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const DEFAULT_WIDGET_CONFIG = {
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// Core Features
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enableHighContrast: true,
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enableBiggerText: true,
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enableTextSpacing: true,
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enablePauseAnimations: true,
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enableHideImages: true,
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enableDyslexiaFont: true,
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enableBiggerCursor: true,
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enableLineHeight: true,
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enableTextAlign: true,
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// Advanced Features
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enableScreenReader: true,
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enableVoiceControl: true,
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enableReducedMotion: true,
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enableFontSelection: true,
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enableColorFilter: true,
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// Widget Styling
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widgetWidth: '440px',
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widgetPosition: {
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side: 'right', // 'left' or 'right'
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right: '20px',
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left: '20px',
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bottom: '20px'
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},
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// Colors
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colors: {
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primary: '#000000',
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primaryHover: '#00bfff',
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secondary: '#f9f9f9',
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text: '#333',
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textLight: '#fff',
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border: '#e6e6e6',
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borderHover: '#d4d4d4',
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shadow: 'rgba(0, 0, 0, 0.2)',
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focus: '#ff6b35',
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focusGlow: 'rgba(255, 107, 53, 0.3)'
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},
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// Button styling
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button: {
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size: '55px',
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borderRadius: '100px',
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iconSize: '40px',
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shadow: '0 4px 8px rgba(0, 0, 0, 0.2)'
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},
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// Menu styling
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menu: {
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headerHeight: '55px',
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padding: '0 10px 10px 10px',
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optionPadding: '20px 10px',
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optionMargin: '10px',
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borderRadius: '8px',
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fontSize: '16px',
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titleFontSize: '22px',
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closeButtonSize: '44px'
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},
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// Typography
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typography: {
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fontFamily: 'Arial, sans-serif',
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fontSize: '16px',
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titleFontSize: '22px',
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titleFontWeight: '500',
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lineHeight: '1'
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},
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// Animation
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animation: {
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transition: '0.2s',
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hoverScale: '1.05'
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},
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// Language/Text Configuration
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lang: {
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accessibilityMenu: 'Accessibility Menu',
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closeAccessibilityMenu: 'Close Accessibility Menu',
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accessibilityTools: 'Accessibility Tools',
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resetAllSettings: 'Reset All Settings',
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screenReader: 'Screen Reader',
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voiceCommand: 'Voice Command',
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textSpacing: 'Text Spacing',
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pauseAnimations: 'Pause Animations',
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hideImages: 'Hide Images',
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dyslexiaFriendly: 'Dyslexia Friendly',
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biggerCursor: 'Bigger Cursor',
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lineHeight: 'Line Height',
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reducedMotion: 'Reduced Motion',
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fontSelection: 'Font Selection',
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colorFilter: 'Color Filter',
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textAlign: 'Text Align',
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textSize: 'Text Size',
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highContrast: 'High Contrast',
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defaultFont: 'Default Font',
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noFilter: 'No Filter',
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default: 'Default',
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screenReaderOn: 'Screen reader on',
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screenReaderOff: 'Screen reader off',
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voiceControlActivated: 'Voice control activated',
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notSupportedBrowser: 'is not supported in this browser',
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close: 'Close'
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}
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};
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// Function to deep merge user configuration with defaults
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function mergeConfigs(defaultConfig, userConfig) {
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const result = { ...defaultConfig };
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if (!userConfig) return result;
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for (const key in userConfig) {
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if (userConfig.hasOwnProperty(key)) {
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if (typeof userConfig[key] === 'object' && userConfig[key] !== null && !Array.isArray(userConfig[key])) {
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result[key] = mergeConfigs(defaultConfig[key] || {}, userConfig[key]);
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} else {
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result[key] = userConfig[key];
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}
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}
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}
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return result;
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}
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// Merge user configuration with defaults
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// Users can define window.ACCESSIBILITY_WIDGET_CONFIG before loading this script
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const WIDGET_CONFIG = mergeConfigs(DEFAULT_WIDGET_CONFIG, window.ACCESSIBILITY_WIDGET_CONFIG || {});
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// ===========================================
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// STYLES & VISUAL ASSETS
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// ===========================================
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// Generate styles using configuration variables
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const styles = `
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#snn-accessibility-fixed-button {
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position: fixed !important;
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${WIDGET_CONFIG.widgetPosition.side}: ${WIDGET_CONFIG.widgetPosition[WIDGET_CONFIG.widgetPosition.side]} !important;
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bottom: ${WIDGET_CONFIG.widgetPosition.bottom} !important;
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z-index: 9999;
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}
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#snn-accessibility-button {
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background: ${WIDGET_CONFIG.colors.primary};
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border: none;
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border-radius: ${WIDGET_CONFIG.button.borderRadius};
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cursor: pointer;
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width: ${WIDGET_CONFIG.button.size};
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height: ${WIDGET_CONFIG.button.size};
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box-shadow: ${WIDGET_CONFIG.button.shadow};
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transition: ${WIDGET_CONFIG.animation.transition} !important;
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display: flex;
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justify-content: center;
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align-items: center;
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}
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#snn-accessibility-button:hover {
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transform: scale(${WIDGET_CONFIG.animation.hoverScale});
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}
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#snn-accessibility-button:focus {
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outline: 2px solid ${WIDGET_CONFIG.colors.textLight};
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outline-offset: 2px;
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}
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#snn-accessibility-button svg {
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width: ${WIDGET_CONFIG.button.iconSize};
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height: ${WIDGET_CONFIG.button.iconSize};
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fill: ${WIDGET_CONFIG.colors.textLight};
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pointer-events: none;
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}
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#snn-accessibility-menu {
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position: fixed;
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top: 0;
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${WIDGET_CONFIG.widgetPosition.side}: 0;
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width: ${WIDGET_CONFIG.widgetWidth};
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height: 100vh;
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overflow-y: auto;
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background-color: ${WIDGET_CONFIG.colors.secondary};
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padding: 0;
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display: none;
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font-family: ${WIDGET_CONFIG.typography.fontFamily};
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z-index: 999999;
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scrollbar-width: thin;
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}
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.snn-accessibility-option {
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font-size: ${WIDGET_CONFIG.menu.fontSize};
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display: flex;
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align-items: center;
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padding: ${WIDGET_CONFIG.menu.optionPadding};
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width: 100%;
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background-color: ${WIDGET_CONFIG.colors.border};
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color: ${WIDGET_CONFIG.colors.text};
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border: none;
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cursor: pointer;
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border-radius: ${WIDGET_CONFIG.menu.borderRadius};
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transition: background-color ${WIDGET_CONFIG.animation.transition};
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line-height: ${WIDGET_CONFIG.typography.lineHeight} !important;
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}
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.snn-accessibility-option:hover {
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background-color: ${WIDGET_CONFIG.colors.borderHover};
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}
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.snn-accessibility-option.active {
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background-color: ${WIDGET_CONFIG.colors.primary};
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color: ${WIDGET_CONFIG.colors.textLight};
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}
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.snn-icon {
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margin-right: 12px;
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width: ${WIDGET_CONFIG.button.iconSize};
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height: ${WIDGET_CONFIG.button.iconSize};
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}
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.snn-icon svg {
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width: 100%;
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height: 100%;
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fill: currentColor;
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}
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.snn-close {
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background: none;
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border: none;
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font-size: ${WIDGET_CONFIG.menu.closeButtonSize};
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color: ${WIDGET_CONFIG.colors.textLight};
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cursor: pointer;
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margin-left: auto;
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line-height: ${WIDGET_CONFIG.typography.lineHeight};
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border-radius: ${WIDGET_CONFIG.button.borderRadius};
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width: ${WIDGET_CONFIG.menu.closeButtonSize};
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height: ${WIDGET_CONFIG.menu.closeButtonSize};
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position: relative;
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}
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.snn-close::before {
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content: '×';
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position: absolute;
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top: 50%;
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left: 50%;
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transform: translate(-50%, -50%);
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font-size: ${WIDGET_CONFIG.menu.closeButtonSize};
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line-height: 1;
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}
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.snn-close:focus {
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outline: solid 2px ${WIDGET_CONFIG.colors.textLight};
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}
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.snn-close:hover {
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color: ${WIDGET_CONFIG.colors.text};
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}
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.snn-header {
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display: flex;
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align-items: center;
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margin-bottom: 20px;
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padding: 10px;
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background: #000000;
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height: ${WIDGET_CONFIG.menu.headerHeight};
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position: sticky;
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top: 0;
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z-index: 10;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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}
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.snn-content {
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padding: 0 10px 10px 10px;
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}
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.snn-reset-button {
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font-size: ${WIDGET_CONFIG.menu.fontSize};
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display: flex;
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align-items: center;
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justify-content: center;
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margin-bottom: 10px;
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padding: ${WIDGET_CONFIG.menu.optionPadding};
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width: 100%;
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background-color: #343434;
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color: ${WIDGET_CONFIG.colors.textLight};
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border: none;
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cursor: pointer;
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border-radius: ${WIDGET_CONFIG.menu.borderRadius};
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transition: background-color ${WIDGET_CONFIG.animation.transition};
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line-height: ${WIDGET_CONFIG.typography.lineHeight} !important;
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font-weight: 500;
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gap: 8px;
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}
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.snn-reset-button:hover {
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background-color: #cc3333;
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}
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.snn-options-grid {
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: ${WIDGET_CONFIG.menu.optionMargin};
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margin-bottom: 20px;
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}
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.snn-title {
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margin: 0;
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font-size: ${WIDGET_CONFIG.menu.titleFontSize};
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color: ${WIDGET_CONFIG.colors.textLight};
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line-height: ${WIDGET_CONFIG.typography.lineHeight} !important;
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margin-left: 5px;
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font-weight: ${WIDGET_CONFIG.typography.titleFontWeight};
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}
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/* Accessibility feature styles */
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.snn-high-contrast-medium {
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filter: contrast(1.3) !important;
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}
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.snn-high-contrast-medium *{
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filter: contrast(1.3) !important;
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}
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.snn-high-contrast-medium #snn-accessibility-menu{
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filter: contrast(0.8) !important;
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}
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.snn-high-contrast-high {
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background-color: #000 !important;
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color: #fff !important;
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filter: contrast(1.5) !important;
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}
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.snn-high-contrast-high *{
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background-color: #000 !important;
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color: #fff !important;
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filter: contrast(1.5) !important;
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}
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.snn-high-contrast-high #snn-accessibility-menu{
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filter: contrast(0.7) !important;
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}
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.snn-high-contrast-ultra {
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background-color: #000 !important;
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color: #ffff00 !important;
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filter: contrast(2.0) !important;
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}
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.snn-high-contrast-ultra *{
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background-color: #000 !important;
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color: #ffff00 !important;
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filter: contrast(2.0) !important;
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}
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.snn-high-contrast-ultra #snn-accessibility-menu{
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filter: contrast(0.6) !important;
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}
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.snn-bigger-text-medium * {
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font-size: 20px !important;
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}
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.snn-bigger-text-large * {
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font-size: 24px !important;
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}
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.snn-bigger-text-xlarge * {
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font-size: 28px !important;
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}
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.snn-text-spacing *:not(#snn-accessibility-menu *, #snn-accessibility-fixed-button *, #snn-accessibility-button *, .snn-accessibility-option *) {
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letter-spacing: 0.2em !important;
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word-spacing: 0.3em !important;
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}
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.snn-pause-animations * {
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animation: none !important;
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transition: none !important;
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}
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.snn-dyslexia-font {
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font-family: 'Comic Sans MS', 'Chalkboard SE', 'Bradley Hand', Brush Script MT, fantasy !important;
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}
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.snn-dyslexia-font * {
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font-family: 'Comic Sans MS', 'Chalkboard SE', 'Bradley Hand', Brush Script MT, fantasy !important;
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}
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.snn-line-height *:not(#snn-accessibility-menu *, #snn-accessibility-fixed-button *, #snn-accessibility-button *, .snn-accessibility-option *) {
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line-height: 2.5 !important;
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}
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.snn-text-align-left *:not(#snn-accessibility-menu *, #snn-accessibility-fixed-button *, #snn-accessibility-button *, .snn-accessibility-option *) {
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text-align: left !important;
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}
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.snn-text-align-center *:not(#snn-accessibility-menu *, #snn-accessibility-fixed-button *, #snn-accessibility-button *, .snn-accessibility-option *) {
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text-align: center !important;
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}
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.snn-text-align-right *:not(#snn-accessibility-menu *, #snn-accessibility-fixed-button *, #snn-accessibility-button *, .snn-accessibility-option *) {
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text-align: right !important;
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}
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.snn-bigger-cursor {
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cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNDgiIGhlaWdodD0iNzIiIHZpZXdCb3g9IjAgMCA0OCA3MiIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNNCAyVjcwTDIwIDU0SDM2TDQgMloiIGZpbGw9IiMwMDAiIHN0cm9rZT0iI2ZmZiIgc3Ryb2tlLXdpZHRoPSI0Ii8+PC9zdmc+'), auto !important;
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}
|
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.snn-bigger-cursor * {
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cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNDgiIGhlaWdodD0iNzIiIHZpZXdCb3g9IjAgMCA0OCA3MiIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNNCAyVjcwTDIwIDU0SDM2TDQgMloiIGZpbGw9IiMwMDAiIHN0cm9rZT0iI2ZmZiIgc3Ryb2tlLXdpZHRoPSI0Ii8+PC9zdmc+'), auto !important;
|
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}
|
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|
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/* Font Selection */
|
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.snn-font-arial {
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font-family: Arial, sans-serif !important;
|
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}
|
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.snn-font-arial * {
|
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font-family: Arial, sans-serif !important;
|
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}
|
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.snn-font-times {
|
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font-family: 'Times New Roman', serif !important;
|
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}
|
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.snn-font-times * {
|
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font-family: 'Times New Roman', serif !important;
|
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}
|
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.snn-font-verdana {
|
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font-family: Verdana, sans-serif !important;
|
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}
|
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.snn-font-verdana * {
|
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font-family: Verdana, sans-serif !important;
|
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}
|
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|
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/* Color Filters */
|
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.snn-filter-protanopia {
|
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filter: url('#protanopia-filter') !important;
|
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}
|
||
.snn-filter-deuteranopia {
|
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filter: url('#deuteranopia-filter') !important;
|
||
}
|
||
.snn-filter-tritanopia {
|
||
filter: url('#tritanopia-filter') !important;
|
||
}
|
||
.snn-filter-grayscale {
|
||
filter: grayscale(100%) !important;
|
||
}
|
||
|
||
/* Reduced Motion */
|
||
.snn-reduced-motion * {
|
||
animation: none !important;
|
||
transition: none !important;
|
||
}
|
||
.snn-reduced-motion *::before,
|
||
.snn-reduced-motion *::after {
|
||
animation: none !important;
|
||
transition: none !important;
|
||
}
|
||
`;
|
||
|
||
// ===========================================
|
||
// SVG ICONS
|
||
// ===========================================
|
||
|
||
// SVG icons
|
||
const icons = {
|
||
buttonsvg: `<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" width="" height="" version="1.1" style="shape-rendering:geometricPrecision; text-rendering:geometricPrecision; image-rendering:optimizeQuality; fill-rule:evenodd; clip-rule:evenodd" viewBox="0 0 2713 2713" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style type="text/css"><![CDATA[.fil1 {fill:${WIDGET_CONFIG.colors.primary}} .fil0 {fill:white}]]></style></defs><g id="Layer_x0020_1"><metadata id="CorelCorpID_0Corel-Layer"/><g id="_275060008"><circle class="fil0" cx="1356" cy="1356" r="1356"/><path class="fil1" d="M1305 315c-143,32 -237,147 -205,319 25,141 143,240 312,213 131,-21 237,-160 206,-324 -23,-125 -156,-243 -313,-208zm-150 1699l0 -340c1,-75 5,-367 1,-417 -9,-113 -93,-177 -174,-250 -19,-17 -33,-31 -53,-50 -19,-18 -35,-30 -54,-49 -19,-18 -34,-29 -53,-50 -38,-40 -162,-118 -98,-188 60,-65 124,34 188,86l111 99c11,10 17,13 27,25 9,12 16,18 28,28 35,30 72,64 125,85 122,50 214,44 334,-14 71,-34 103,-68 150,-113 9,-9 17,-15 27,-24 20,-18 39,-34 56,-51l108 -103c19,-18 29,-36 65,-39 33,-3 58,10 67,36 11,30 3,63 -13,83l-273 254c-40,31 -76,64 -109,98 -38,41 -54,80 -55,153 -3,243 -1,489 0,733 0,3 0,5 0,8 0,0 0,0 0,0 0,184 149,333 333,333 61,0 118,-17 167,-45 24,-18 48,-36 67,-51 39,-32 140,-145 171,-186 11,-16 19,-26 30,-42 104,-151 178,-317 209,-505 39,-242 -12,-506 -119,-712 -36,-69 -69,-123 -108,-178 -12,-15 -20,-24 -32,-39 -28,-36 -67,-84 -99,-115 -69,-66 -76,-68 -158,-129 -53,-39 -113,-70 -182,-103 -140,-67 -297,-100 -472,-102 -180,-2 -322,37 -472,97 -55,22 -93,42 -143,72 -55,33 -73,43 -127,87 -47,38 -70,60 -111,104 -6,6 -12,10 -18,17 -7,7 -9,13 -16,20 -8,9 -10,8 -17,18 -80,101 -91,116 -158,235 -64,113 -121,286 -136,435 -18,190 1,329 58,498 46,134 132,283 204,367 13,15 21,26 32,40 34,43 103,105 146,139 7,6 14,11 22,17 54,38 120,61 192,61 183,0 332,-149 332,-333l0 0z"/></g></g></svg>`,
|
||
highContrast: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><circle cx="32" cy="32" r="30" fill="#000"/><path d="M32 2a30 30 0 000 60V2z" fill="#fff"/></svg>`,
|
||
biggerText: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M32 8L8 56h12l6-12h24l6 12h12L32 8zm-6 36L32 20l6 24H26z"/></svg>`,
|
||
textSpacing: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M10 16h44v4H10zm0 12h44v4H10zm0 12h44v4H10zm0 12h44v4H10z"/></svg>`,
|
||
pauseAnimations: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><rect x="16" y="12" width="10" height="40"/><rect x="38" y="12" width="10" height="40"/></svg>`,
|
||
hideImages: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M32 12C16 12 4 32 4 32s12 20 28 20 28-20 28-20S48 12 32 12zm0 32a12 12 0 1112-12 12 12 0 01-12 12z"/><circle cx="32" cy="32" r="8"/></svg>`,
|
||
dyslexiaFont: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M12 8v48h12a16 16 0 000-32h-8v-8h16V8H12zm12 24a8 8 0 010 16h-4V32h4zM40 8v48h12V8H40z"/></svg>`,
|
||
biggerCursor: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M12 4v56l16-16h24L12 4z"/></svg>`,
|
||
lineHeight: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M16 16h32v4H16zm0 12h32v4H16zm0 12h32v4H16zm0 12h32v4H16zM8 8l8 8-8 8V8zm0 32l8 8-8 8V40z"/></svg>`,
|
||
textAlign: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M10 16h44v4H10zm0 12h44v4H10zm0 12h44v4H10zm0 12h44v4H10z"/></svg>`,
|
||
screenReader: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M16 24 L24 24 L32 16 L32 48 L24 40 L16 40 Z" fill="#333" stroke="#555" stroke-width="2"/><path d="M36 20 C42 24, 42 40, 36 44" fill="none" stroke="#fff" stroke-width="2" stroke-linecap="round"/><path d="M36 12 C48 24, 48 40, 36 52" fill="none" stroke="#555" stroke-width="2" stroke-linecap="round"/><rect x="28" y="48" width="8" height="8" fill="#ccc"/></svg>`,
|
||
resetAll: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.41 0-8-3.59-8-8s3.59-8 8-8 8 3.59 8 8-3.59 8-8 8z"/><path d="M8 12l4-4 4 4-1.41 1.41L12 10.83l-2.59 2.58z" transform="rotate(45 12 12)"/></svg>`,
|
||
voiceControl: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M32 44a12 12 0 0012-12V20a12 12 0 10-24 0v12a12 12 0 0012 12z" fill="#333"/><path d="M20 32h24v4H20z" fill="#555"/><path d="M32 48v8" stroke="#555" stroke-width="4" stroke-linecap="round"/></svg>`,
|
||
fontSelection: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><text x="32" y="40" font-family="serif" font-size="24" text-anchor="middle" fill="#333">Aa</text><path d="M8 48h48v2H8z"/></svg>`,
|
||
colorFilter: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><circle cx="32" cy="32" r="24" fill="none" stroke="#333" stroke-width="2"/><path d="M32 8a24 24 0 000 48V8z" fill="#f00" opacity="0.3"/><path d="M32 8a24 24 0 000 48" fill="none" stroke="#333" stroke-width="2" stroke-dasharray="4,2"/></svg>`,
|
||
reducedMotion: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><rect x="16" y="24" width="8" height="16" fill="#333"/><rect x="28" y="24" width="8" height="16" fill="#333"/><rect x="40" y="24" width="8" height="16" fill="#333"/></svg>`,
|
||
};
|
||
|
||
// ===========================================
|
||
// CORE UTILITY FUNCTIONS
|
||
// ===========================================
|
||
|
||
// Inject styles and SVG filters into the document
|
||
function injectStyles() {
|
||
const styleSheet = document.createElement('style');
|
||
styleSheet.innerText = styles;
|
||
document.head.appendChild(styleSheet);
|
||
|
||
// Add SVG color blindness filters
|
||
const svgFilters = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
|
||
svgFilters.style.position = 'absolute';
|
||
svgFilters.style.width = '0';
|
||
svgFilters.style.height = '0';
|
||
svgFilters.innerHTML = `
|
||
<defs>
|
||
<filter id="protanopia-filter">
|
||
<feColorMatrix type="matrix" values="0.567,0.433,0,0,0 0.558,0.442,0,0,0 0,0.242,0.758,0,0 0,0,0,1,0"/>
|
||
</filter>
|
||
<filter id="deuteranopia-filter">
|
||
<feColorMatrix type="matrix" values="0.625,0.375,0,0,0 0.7,0.3,0,0,0 0,0.3,0.7,0,0 0,0,0,1,0"/>
|
||
</filter>
|
||
<filter id="tritanopia-filter">
|
||
<feColorMatrix type="matrix" values="0.95,0.05,0,0,0 0,0.433,0.567,0,0 0,0.475,0.525,0,0 0,0,0,1,0"/>
|
||
</filter>
|
||
</defs>
|
||
`;
|
||
document.body.appendChild(svgFilters);
|
||
}
|
||
|
||
// ===========================================
|
||
// PERFORMANCE OPTIMIZATION
|
||
// ===========================================
|
||
|
||
// Cache for DOM elements to improve performance
|
||
const domCache = {
|
||
body: document.body,
|
||
documentElement: document.documentElement,
|
||
images: null,
|
||
lastImageUpdate: 0,
|
||
getImages: function() {
|
||
const now = Date.now();
|
||
if (!this.images || now - this.lastImageUpdate > 5000) {
|
||
this.images = document.querySelectorAll('img');
|
||
this.lastImageUpdate = now;
|
||
}
|
||
return this.images;
|
||
}
|
||
};
|
||
|
||
// Apply saved settings from localStorage (optimized)
|
||
function applySettings() {
|
||
const settings = [
|
||
{ key: 'biggerCursor', className: 'snn-bigger-cursor' },
|
||
{ key: 'biggerText', className: 'snn-bigger-text' },
|
||
{ key: 'highContrast', className: 'snn-high-contrast', target: domCache.documentElement },
|
||
{ key: 'dyslexiaFont', className: 'snn-dyslexia-font' },
|
||
{ key: 'lineHeight', className: 'snn-line-height' },
|
||
{ key: 'textAlign', className: 'snn-text-align' },
|
||
{ key: 'pauseAnimations', className: 'snn-pause-animations' },
|
||
{ key: 'textSpacing', className: 'snn-text-spacing' },
|
||
{ key: 'reducedMotion', className: 'snn-reduced-motion' },
|
||
];
|
||
|
||
// Batch DOM operations for better performance
|
||
const bodyClassesToAdd = [];
|
||
const bodyClassesToRemove = [];
|
||
const docClassesToAdd = [];
|
||
const docClassesToRemove = [];
|
||
|
||
settings.forEach(({ key, className, target = domCache.body }) => {
|
||
const isActive = localStorage.getItem(key) === 'true';
|
||
if (className) {
|
||
if (target === domCache.documentElement) {
|
||
if (isActive) {
|
||
docClassesToAdd.push(className);
|
||
} else {
|
||
docClassesToRemove.push(className);
|
||
}
|
||
} else {
|
||
if (isActive) {
|
||
bodyClassesToAdd.push(className);
|
||
} else {
|
||
bodyClassesToRemove.push(className);
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
// Apply all class changes at once
|
||
if (bodyClassesToAdd.length > 0) {
|
||
domCache.body.classList.add(...bodyClassesToAdd);
|
||
}
|
||
if (bodyClassesToRemove.length > 0) {
|
||
domCache.body.classList.remove(...bodyClassesToRemove);
|
||
}
|
||
if (docClassesToAdd.length > 0) {
|
||
domCache.documentElement.classList.add(...docClassesToAdd);
|
||
}
|
||
if (docClassesToRemove.length > 0) {
|
||
domCache.documentElement.classList.remove(...docClassesToRemove);
|
||
}
|
||
|
||
// Handle font selection
|
||
const fontClasses = ['snn-font-arial', 'snn-font-times', 'snn-font-verdana'];
|
||
domCache.body.classList.remove(...fontClasses);
|
||
const selectedFont = localStorage.getItem('fontSelection');
|
||
if (selectedFont) {
|
||
domCache.body.classList.add(`snn-font-${selectedFont}`);
|
||
}
|
||
|
||
// Handle color filters
|
||
const filterClasses = ['snn-filter-protanopia', 'snn-filter-deuteranopia', 'snn-filter-tritanopia', 'snn-filter-grayscale'];
|
||
domCache.documentElement.classList.remove(...filterClasses);
|
||
const selectedFilter = localStorage.getItem('colorFilter');
|
||
if (selectedFilter) {
|
||
domCache.documentElement.classList.add(`snn-filter-${selectedFilter}`);
|
||
}
|
||
|
||
// Handle text alignment
|
||
const alignClasses = ['snn-text-align-left', 'snn-text-align-center', 'snn-text-align-right'];
|
||
domCache.body.classList.remove(...alignClasses);
|
||
const selectedAlign = localStorage.getItem('textAlign');
|
||
if (selectedAlign) {
|
||
domCache.body.classList.add(`snn-text-align-${selectedAlign}`);
|
||
}
|
||
|
||
// Handle bigger text
|
||
const textClasses = ['snn-bigger-text-medium', 'snn-bigger-text-large', 'snn-bigger-text-xlarge'];
|
||
domCache.body.classList.remove(...textClasses);
|
||
const selectedTextSize = localStorage.getItem('biggerText');
|
||
if (selectedTextSize) {
|
||
domCache.body.classList.add(`snn-bigger-text-${selectedTextSize}`);
|
||
}
|
||
|
||
// Handle high contrast
|
||
const contrastClasses = ['snn-high-contrast-medium', 'snn-high-contrast-high', 'snn-high-contrast-ultra'];
|
||
domCache.documentElement.classList.remove(...contrastClasses);
|
||
const selectedContrast = localStorage.getItem('highContrast');
|
||
if (selectedContrast) {
|
||
domCache.documentElement.classList.add(`snn-high-contrast-${selectedContrast}`);
|
||
}
|
||
|
||
// Handle images with cached query
|
||
const hideImages = localStorage.getItem('hideImages') === 'true';
|
||
const displayStyle = hideImages ? 'none' : '';
|
||
domCache.getImages().forEach((img) => {
|
||
img.style.display = displayStyle;
|
||
});
|
||
|
||
if (screenReader.active && screenReader.isSupported) {
|
||
document.addEventListener('focusin', screenReader.handleFocus);
|
||
}
|
||
|
||
if (voiceControl.isActive && voiceControl.isSupported) {
|
||
voiceControl.startListening();
|
||
}
|
||
}
|
||
|
||
// ===========================================
|
||
// UI COMPONENTS
|
||
// ===========================================
|
||
|
||
// Create the accessibility button
|
||
function createAccessibilityButton() {
|
||
const buttonContainer = document.createElement('div');
|
||
buttonContainer.id = 'snn-accessibility-fixed-button';
|
||
|
||
const button = document.createElement('button');
|
||
button.id = 'snn-accessibility-button';
|
||
button.innerHTML = icons.buttonsvg;
|
||
button.setAttribute('aria-label', WIDGET_CONFIG.lang.accessibilityMenu);
|
||
|
||
button.addEventListener('click', function () {
|
||
toggleMenu();
|
||
});
|
||
|
||
button.addEventListener('keydown', function (e) {
|
||
if (e.key === 'Enter' || e.key === ' ') {
|
||
e.preventDefault();
|
||
toggleMenu();
|
||
}
|
||
});
|
||
|
||
buttonContainer.appendChild(button);
|
||
document.body.appendChild(buttonContainer);
|
||
}
|
||
|
||
// Reset all accessibility settings
|
||
function resetAccessibilitySettings() {
|
||
const keys = [
|
||
'biggerCursor',
|
||
'biggerText',
|
||
'dyslexiaFont',
|
||
'hideImages',
|
||
'lineHeight',
|
||
'pauseAnimations',
|
||
'screenReader',
|
||
'textAlign',
|
||
'textSpacing',
|
||
'highContrast',
|
||
'voiceControl',
|
||
'reducedMotion',
|
||
'fontSelection',
|
||
'colorFilter',
|
||
];
|
||
keys.forEach((key) => localStorage.removeItem(key));
|
||
|
||
// Remove all CSS classes
|
||
const cssClasses = [
|
||
'snn-bigger-cursor',
|
||
'snn-bigger-text',
|
||
'snn-dyslexia-font',
|
||
'snn-pause-animations',
|
||
'snn-text-spacing',
|
||
'snn-line-height',
|
||
'snn-text-align',
|
||
'snn-reduced-motion',
|
||
'snn-font-arial',
|
||
'snn-font-times',
|
||
'snn-font-verdana'
|
||
];
|
||
cssClasses.forEach(cls => document.body.classList.remove(cls));
|
||
|
||
const documentClasses = [
|
||
'snn-high-contrast',
|
||
'snn-filter-protanopia',
|
||
'snn-filter-deuteranopia',
|
||
'snn-filter-tritanopia',
|
||
'snn-filter-grayscale'
|
||
];
|
||
documentClasses.forEach(cls => document.documentElement.classList.remove(cls));
|
||
|
||
domCache.getImages().forEach((img) => (img.style.display = ''));
|
||
|
||
if (screenReader.active) {
|
||
screenReader.toggle(false);
|
||
}
|
||
|
||
if (voiceControl.isActive) {
|
||
voiceControl.toggle(false);
|
||
}
|
||
|
||
applySettings();
|
||
|
||
const buttons = document.querySelectorAll('#snn-accessibility-menu .snn-accessibility-option');
|
||
buttons.forEach((button) => {
|
||
button.classList.remove('active');
|
||
button.setAttribute('aria-pressed', 'false');
|
||
});
|
||
}
|
||
|
||
// Create toggle buttons for accessibility options
|
||
function createToggleButton(
|
||
buttonText,
|
||
localStorageKey,
|
||
className,
|
||
targetElement = document.body,
|
||
customToggleFunction = null,
|
||
iconSVG = '',
|
||
requiresFeature = null
|
||
) {
|
||
const button = document.createElement('button');
|
||
button.innerHTML = `<span class="snn-icon">${iconSVG}</span><span class="snn-button-text">${buttonText}</span>`;
|
||
button.setAttribute('data-key', localStorageKey);
|
||
button.setAttribute('aria-label', buttonText);
|
||
button.classList.add('snn-accessibility-option');
|
||
|
||
// Check if feature is supported
|
||
if (requiresFeature && !requiresFeature.isSupported) {
|
||
button.disabled = true;
|
||
button.setAttribute('title', `${buttonText} ${WIDGET_CONFIG.lang.notSupportedBrowser}`);
|
||
button.style.opacity = '0.5';
|
||
return button;
|
||
}
|
||
|
||
const isActive = localStorage.getItem(localStorageKey) === 'true';
|
||
button.setAttribute('aria-pressed', isActive);
|
||
button.setAttribute('role', 'switch');
|
||
if (isActive) {
|
||
button.classList.add('active');
|
||
}
|
||
|
||
button.addEventListener('click', function () {
|
||
handleToggle();
|
||
});
|
||
|
||
button.addEventListener('keydown', function (e) {
|
||
if (e.key === 'Enter' || e.key === ' ') {
|
||
e.preventDefault();
|
||
handleToggle();
|
||
}
|
||
});
|
||
|
||
function handleToggle() {
|
||
const newIsActive = localStorage.getItem(localStorageKey) !== 'true';
|
||
|
||
// If there's a custom toggle function, call it and check if it succeeded
|
||
if (customToggleFunction) {
|
||
const success = customToggleFunction(newIsActive);
|
||
if (success === false) {
|
||
// Feature not supported or failed
|
||
return;
|
||
}
|
||
}
|
||
|
||
localStorage.setItem(localStorageKey, newIsActive);
|
||
button.setAttribute('aria-pressed', newIsActive);
|
||
|
||
if (newIsActive) {
|
||
button.classList.add('active');
|
||
if (className) {
|
||
targetElement.classList.add(className);
|
||
}
|
||
} else {
|
||
button.classList.remove('active');
|
||
if (className) {
|
||
targetElement.classList.remove(className);
|
||
}
|
||
}
|
||
}
|
||
|
||
return button;
|
||
}
|
||
|
||
// Create special action buttons (for cycling through options)
|
||
function createActionButton(buttonText, actionFunction, iconSVG) {
|
||
const button = document.createElement('button');
|
||
button.innerHTML = `<span class="snn-icon">${iconSVG}</span><span class="snn-button-text">${buttonText}: <span class="snn-status">${WIDGET_CONFIG.lang.default}</span></span>`;
|
||
button.setAttribute('aria-label', buttonText);
|
||
button.classList.add('snn-accessibility-option');
|
||
|
||
// Update initial status
|
||
updateActionButtonStatus(button, buttonText, actionFunction);
|
||
|
||
button.addEventListener('click', function () {
|
||
const result = actionFunction();
|
||
if (result) {
|
||
const statusSpan = button.querySelector('.snn-status');
|
||
statusSpan.textContent = result;
|
||
}
|
||
});
|
||
|
||
button.addEventListener('keydown', function (e) {
|
||
if (e.key === 'Enter' || e.key === ' ') {
|
||
e.preventDefault();
|
||
const result = actionFunction();
|
||
if (result) {
|
||
const statusSpan = button.querySelector('.snn-status');
|
||
statusSpan.textContent = result;
|
||
}
|
||
}
|
||
});
|
||
|
||
return button;
|
||
}
|
||
|
||
// Update action button status on page load
|
||
function updateActionButtonStatus(button, buttonText, actionFunction) {
|
||
const statusSpan = button.querySelector('.snn-status');
|
||
|
||
if (buttonText.includes('Font')) {
|
||
const currentFont = localStorage.getItem('fontSelection');
|
||
statusSpan.textContent = currentFont ? currentFont.charAt(0).toUpperCase() + currentFont.slice(1) : WIDGET_CONFIG.lang.default;
|
||
} else if (buttonText.includes('Color')) {
|
||
const currentFilter = localStorage.getItem('colorFilter');
|
||
statusSpan.textContent = currentFilter ? currentFilter.charAt(0).toUpperCase() + currentFilter.slice(1) : WIDGET_CONFIG.lang.noFilter;
|
||
} else if (buttonText.includes('Text Align')) {
|
||
const currentAlign = localStorage.getItem('textAlign');
|
||
statusSpan.textContent = currentAlign ? currentAlign.charAt(0).toUpperCase() + currentAlign.slice(1) : WIDGET_CONFIG.lang.default;
|
||
} else if (buttonText.includes('Text Size')) {
|
||
const currentSize = localStorage.getItem('biggerText');
|
||
statusSpan.textContent = currentSize ? (currentSize === 'xlarge' ? 'X-Large' : currentSize.charAt(0).toUpperCase() + currentSize.slice(1)) : WIDGET_CONFIG.lang.default;
|
||
} else if (buttonText.includes('High Contrast')) {
|
||
const currentContrast = localStorage.getItem('highContrast');
|
||
statusSpan.textContent = currentContrast ? currentContrast.charAt(0).toUpperCase() + currentContrast.slice(1) : WIDGET_CONFIG.lang.default;
|
||
}
|
||
}
|
||
|
||
// ===========================================
|
||
// FEATURE TOGGLE FUNCTIONS
|
||
// ===========================================
|
||
|
||
// Function to hide or show images (optimized)
|
||
function toggleHideImages(isActive) {
|
||
const displayStyle = isActive ? 'none' : '';
|
||
domCache.getImages().forEach((img) => {
|
||
img.style.display = displayStyle;
|
||
});
|
||
}
|
||
|
||
// Font selection handler (optimized)
|
||
function handleFontSelection() {
|
||
const fonts = ['arial', 'times', 'verdana'];
|
||
const currentFont = localStorage.getItem('fontSelection') || 'default';
|
||
const currentIndex = fonts.indexOf(currentFont);
|
||
const nextIndex = (currentIndex + 1) % (fonts.length + 1); // +1 for default
|
||
|
||
// Remove all font classes in one operation
|
||
const fontClasses = ['snn-font-arial', 'snn-font-times', 'snn-font-verdana'];
|
||
domCache.body.classList.remove(...fontClasses);
|
||
|
||
if (nextIndex === fonts.length) {
|
||
// Default font
|
||
localStorage.removeItem('fontSelection');
|
||
return WIDGET_CONFIG.lang.defaultFont;
|
||
} else {
|
||
const selectedFont = fonts[nextIndex];
|
||
localStorage.setItem('fontSelection', selectedFont);
|
||
domCache.body.classList.add(`snn-font-${selectedFont}`);
|
||
return selectedFont.charAt(0).toUpperCase() + selectedFont.slice(1);
|
||
}
|
||
}
|
||
|
||
// Color filter handler (optimized)
|
||
function handleColorFilter() {
|
||
const filters = ['protanopia', 'deuteranopia', 'tritanopia', 'grayscale'];
|
||
const currentFilter = localStorage.getItem('colorFilter') || 'none';
|
||
const currentIndex = filters.indexOf(currentFilter);
|
||
const nextIndex = (currentIndex + 1) % (filters.length + 1); // +1 for none
|
||
|
||
// Remove all filter classes in one operation
|
||
const filterClasses = ['snn-filter-protanopia', 'snn-filter-deuteranopia', 'snn-filter-tritanopia', 'snn-filter-grayscale'];
|
||
domCache.documentElement.classList.remove(...filterClasses);
|
||
|
||
if (nextIndex === filters.length) {
|
||
// No filter
|
||
localStorage.removeItem('colorFilter');
|
||
return WIDGET_CONFIG.lang.noFilter;
|
||
} else {
|
||
const selectedFilter = filters[nextIndex];
|
||
localStorage.setItem('colorFilter', selectedFilter);
|
||
domCache.documentElement.classList.add(`snn-filter-${selectedFilter}`);
|
||
return selectedFilter.charAt(0).toUpperCase() + selectedFilter.slice(1);
|
||
}
|
||
}
|
||
|
||
// Text align handler with 3 states
|
||
function handleTextAlign() {
|
||
const alignments = ['left', 'center', 'right'];
|
||
const currentAlign = localStorage.getItem('textAlign') || 'none';
|
||
const currentIndex = alignments.indexOf(currentAlign);
|
||
const nextIndex = (currentIndex + 1) % (alignments.length + 1); // +1 for none
|
||
|
||
// Remove all alignment classes
|
||
const alignClasses = ['snn-text-align-left', 'snn-text-align-center', 'snn-text-align-right'];
|
||
domCache.body.classList.remove(...alignClasses);
|
||
|
||
if (nextIndex === alignments.length) {
|
||
// Default alignment
|
||
localStorage.removeItem('textAlign');
|
||
return WIDGET_CONFIG.lang.default;
|
||
} else {
|
||
const selectedAlign = alignments[nextIndex];
|
||
localStorage.setItem('textAlign', selectedAlign);
|
||
domCache.body.classList.add(`snn-text-align-${selectedAlign}`);
|
||
return selectedAlign.charAt(0).toUpperCase() + selectedAlign.slice(1);
|
||
}
|
||
}
|
||
|
||
// Bigger text handler with 3 states
|
||
function handleBiggerText() {
|
||
const textSizes = ['medium', 'large', 'xlarge'];
|
||
const currentSize = localStorage.getItem('biggerText') || 'none';
|
||
const currentIndex = textSizes.indexOf(currentSize);
|
||
const nextIndex = (currentIndex + 1) % (textSizes.length + 1); // +1 for none
|
||
|
||
// Remove all text size classes
|
||
const textClasses = ['snn-bigger-text-medium', 'snn-bigger-text-large', 'snn-bigger-text-xlarge'];
|
||
domCache.body.classList.remove(...textClasses);
|
||
|
||
if (nextIndex === textSizes.length) {
|
||
// Default text size
|
||
localStorage.removeItem('biggerText');
|
||
return WIDGET_CONFIG.lang.default;
|
||
} else {
|
||
const selectedSize = textSizes[nextIndex];
|
||
localStorage.setItem('biggerText', selectedSize);
|
||
domCache.body.classList.add(`snn-bigger-text-${selectedSize}`);
|
||
return selectedSize === 'xlarge' ? 'X-Large' : selectedSize.charAt(0).toUpperCase() + selectedSize.slice(1);
|
||
}
|
||
}
|
||
|
||
// High contrast handler with 3 states
|
||
function handleHighContrast() {
|
||
const contrastLevels = ['medium', 'high', 'ultra'];
|
||
const currentContrast = localStorage.getItem('highContrast') || 'none';
|
||
const currentIndex = contrastLevels.indexOf(currentContrast);
|
||
const nextIndex = (currentIndex + 1) % (contrastLevels.length + 1); // +1 for none
|
||
|
||
// Remove all contrast classes
|
||
const contrastClasses = ['snn-high-contrast-medium', 'snn-high-contrast-high', 'snn-high-contrast-ultra'];
|
||
domCache.documentElement.classList.remove(...contrastClasses);
|
||
|
||
if (nextIndex === contrastLevels.length) {
|
||
// Default contrast
|
||
localStorage.removeItem('highContrast');
|
||
return WIDGET_CONFIG.lang.default;
|
||
} else {
|
||
const selectedContrast = contrastLevels[nextIndex];
|
||
localStorage.setItem('highContrast', selectedContrast);
|
||
domCache.documentElement.classList.add(`snn-high-contrast-${selectedContrast}`);
|
||
return selectedContrast.charAt(0).toUpperCase() + selectedContrast.slice(1);
|
||
}
|
||
}
|
||
|
||
// ===========================================
|
||
// ACCESSIBILITY FEATURES
|
||
// ===========================================
|
||
|
||
// Screen reader functionality
|
||
const screenReader = {
|
||
active: localStorage.getItem('screenReader') === 'true',
|
||
isSupported: 'speechSynthesis' in window,
|
||
handleFocus: function (event) {
|
||
if (screenReader.active && screenReader.isSupported) {
|
||
try {
|
||
const content = event.target.innerText || event.target.alt || event.target.title || '';
|
||
if (content.trim() !== '') {
|
||
window.speechSynthesis.cancel();
|
||
const speech = new SpeechSynthesisUtterance(content);
|
||
speech.lang = 'en-US';
|
||
speech.onerror = function(event) {
|
||
console.warn('Speech synthesis error:', event.error);
|
||
};
|
||
window.speechSynthesis.speak(speech);
|
||
}
|
||
} catch (error) {
|
||
console.warn('Screen reader error:', error);
|
||
}
|
||
}
|
||
},
|
||
toggle: function (isActive) {
|
||
if (!screenReader.isSupported) {
|
||
console.warn(`Speech synthesis ${WIDGET_CONFIG.lang.notSupportedBrowser}`);
|
||
return false;
|
||
}
|
||
|
||
screenReader.active = isActive;
|
||
localStorage.setItem('screenReader', isActive);
|
||
|
||
try {
|
||
if (isActive) {
|
||
document.addEventListener('focusin', screenReader.handleFocus);
|
||
const feedbackSpeech = new SpeechSynthesisUtterance(WIDGET_CONFIG.lang.screenReaderOn);
|
||
feedbackSpeech.lang = 'en-US';
|
||
feedbackSpeech.onerror = function(event) {
|
||
console.warn('Speech synthesis feedback error:', event.error);
|
||
};
|
||
window.speechSynthesis.speak(feedbackSpeech);
|
||
} else {
|
||
document.removeEventListener('focusin', screenReader.handleFocus);
|
||
window.speechSynthesis.cancel();
|
||
const feedbackSpeech = new SpeechSynthesisUtterance(WIDGET_CONFIG.lang.screenReaderOff);
|
||
feedbackSpeech.lang = 'en-US';
|
||
feedbackSpeech.onerror = function(event) {
|
||
console.warn('Speech synthesis feedback error:', event.error);
|
||
};
|
||
window.speechSynthesis.speak(feedbackSpeech);
|
||
}
|
||
} catch (error) {
|
||
console.warn('Screen reader toggle error:', error);
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
},
|
||
};
|
||
|
||
// Voice control functionality
|
||
const voiceControl = {
|
||
isActive: localStorage.getItem('voiceControl') === 'true',
|
||
recognition: null,
|
||
isSupported: 'SpeechRecognition' in window || 'webkitSpeechRecognition' in window,
|
||
retryCount: 0,
|
||
maxRetries: 3,
|
||
toggle: function (isActive) {
|
||
if (!voiceControl.isSupported) {
|
||
console.warn(`Speech Recognition API ${WIDGET_CONFIG.lang.notSupportedBrowser}`);
|
||
return false;
|
||
}
|
||
|
||
voiceControl.isActive = isActive;
|
||
localStorage.setItem('voiceControl', isActive);
|
||
|
||
try {
|
||
if (isActive) {
|
||
voiceControl.startListening();
|
||
} else {
|
||
if (voiceControl.recognition) {
|
||
voiceControl.recognition.stop();
|
||
voiceControl.recognition = null;
|
||
}
|
||
voiceControl.retryCount = 0;
|
||
}
|
||
} catch (error) {
|
||
console.warn('Voice control toggle error:', error);
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
},
|
||
startListening: function () {
|
||
if (!voiceControl.isSupported) {
|
||
return;
|
||
}
|
||
|
||
try {
|
||
const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
|
||
voiceControl.recognition = new SpeechRecognition();
|
||
voiceControl.recognition.interimResults = false;
|
||
voiceControl.recognition.lang = 'en-US';
|
||
voiceControl.recognition.continuous = false;
|
||
|
||
voiceControl.recognition.onstart = function () {
|
||
console.log(WIDGET_CONFIG.lang.voiceControlActivated);
|
||
voiceControl.retryCount = 0;
|
||
};
|
||
|
||
voiceControl.recognition.onresult = function (event) {
|
||
try {
|
||
const command = event.results[0][0].transcript.toLowerCase();
|
||
voiceControl.handleVoiceCommand(command);
|
||
} catch (error) {
|
||
console.warn('Voice command processing error:', error);
|
||
}
|
||
};
|
||
|
||
voiceControl.recognition.onerror = function (event) {
|
||
console.warn('Speech recognition error:', event.error);
|
||
if (event.error === 'no-speech' && voiceControl.retryCount < voiceControl.maxRetries) {
|
||
voiceControl.retryCount++;
|
||
setTimeout(() => {
|
||
if (voiceControl.isActive) {
|
||
voiceControl.startListening();
|
||
}
|
||
}, 1000);
|
||
}
|
||
};
|
||
|
||
voiceControl.recognition.onend = function () {
|
||
if (voiceControl.isActive && voiceControl.retryCount < voiceControl.maxRetries) {
|
||
setTimeout(() => {
|
||
if (voiceControl.isActive) {
|
||
voiceControl.startListening();
|
||
}
|
||
}, 100);
|
||
}
|
||
};
|
||
|
||
voiceControl.recognition.start();
|
||
} catch (error) {
|
||
console.warn('Voice control initialization error:', error);
|
||
}
|
||
},
|
||
handleVoiceCommand: function (command) {
|
||
console.log(`Received command: ${command}`);
|
||
|
||
try {
|
||
const commandMap = {
|
||
'show menu': 'snn-accessibility-button',
|
||
'open menu': 'snn-accessibility-button',
|
||
'accessibility menu': 'snn-accessibility-button',
|
||
'high contrast': 'highContrast',
|
||
'bigger text': 'biggerText',
|
||
'large text': 'biggerText',
|
||
'text spacing': 'textSpacing',
|
||
'pause animations': 'pauseAnimations',
|
||
'stop animations': 'pauseAnimations',
|
||
'hide images': 'hideImages',
|
||
'dyslexia friendly': 'dyslexiaFont',
|
||
'dyslexia font': 'dyslexiaFont',
|
||
'bigger cursor': 'biggerCursor',
|
||
'large cursor': 'biggerCursor',
|
||
'line height': 'lineHeight',
|
||
'align text': 'textAlign',
|
||
'text align': 'textAlign',
|
||
'screen reader': 'screenReader',
|
||
'voice command': 'voiceControl',
|
||
'voice control': 'voiceControl',
|
||
'reset all': 'resetAll',
|
||
'reset everything': 'resetAll',
|
||
};
|
||
|
||
if (command === 'show menu' || command === 'open menu' || command === 'accessibility menu') {
|
||
if (!menuCache.button) menuCache.init();
|
||
if (menuCache.button) {
|
||
menuCache.button.click();
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (command === 'reset all' || command === 'reset everything') {
|
||
resetAccessibilitySettings();
|
||
return;
|
||
}
|
||
|
||
const localStorageKey = commandMap[command];
|
||
if (localStorageKey) {
|
||
// Use cached menu reference if available
|
||
if (!menuCache.menu) menuCache.init();
|
||
const button = menuCache.menu?.querySelector(
|
||
`.snn-accessibility-option[data-key='${localStorageKey}']`
|
||
);
|
||
if (button) {
|
||
button.click();
|
||
} else {
|
||
console.log('Button not found for command:', command);
|
||
}
|
||
} else {
|
||
console.log('Command not recognized:', command);
|
||
}
|
||
} catch (error) {
|
||
console.warn('Voice command handling error:', error);
|
||
}
|
||
},
|
||
};
|
||
|
||
// Create the accessibility menu
|
||
function createAccessibilityMenu() {
|
||
const menu = document.createElement('div');
|
||
menu.id = 'snn-accessibility-menu';
|
||
menu.style.display = 'none';
|
||
menu.setAttribute('role', 'dialog');
|
||
menu.setAttribute('aria-labelledby', 'snn-accessibility-title');
|
||
menu.setAttribute('aria-hidden', 'true');
|
||
|
||
const header = document.createElement('div');
|
||
header.classList.add('snn-header');
|
||
|
||
const title = document.createElement('h2');
|
||
title.classList.add('snn-title');
|
||
title.id = 'snn-accessibility-title';
|
||
title.textContent = WIDGET_CONFIG.lang.accessibilityTools;
|
||
|
||
const closeButton = document.createElement('button');
|
||
closeButton.className = 'snn-close';
|
||
closeButton.innerHTML = '';
|
||
closeButton.setAttribute('title', WIDGET_CONFIG.lang.closeAccessibilityMenu);
|
||
|
||
closeButton.addEventListener('click', function () {
|
||
closeMenu();
|
||
});
|
||
|
||
closeButton.addEventListener('keydown', function (e) {
|
||
if (e.key === 'Enter' || e.key === ' ') {
|
||
e.preventDefault();
|
||
closeMenu();
|
||
}
|
||
});
|
||
|
||
header.appendChild(title);
|
||
header.appendChild(closeButton);
|
||
menu.appendChild(header);
|
||
|
||
// Create content wrapper
|
||
const content = document.createElement('div');
|
||
content.classList.add('snn-content');
|
||
|
||
// Create reset button (outside grid, full width)
|
||
const resetButton = document.createElement('button');
|
||
resetButton.innerHTML = `<span class="snn-icon">${icons.resetAll}</span><span class="snn-button-text">${WIDGET_CONFIG.lang.resetAllSettings}</span>`;
|
||
resetButton.setAttribute('aria-label', WIDGET_CONFIG.lang.resetAllSettings);
|
||
resetButton.classList.add('snn-reset-button');
|
||
resetButton.addEventListener('click', resetAccessibilitySettings);
|
||
content.appendChild(resetButton);
|
||
|
||
// Create grid wrapper for accessibility options
|
||
const optionsGrid = document.createElement('div');
|
||
optionsGrid.classList.add('snn-options-grid');
|
||
|
||
// Add accessibility options based on configuration
|
||
const options = [
|
||
{
|
||
text: WIDGET_CONFIG.lang.screenReader,
|
||
key: 'screenReader',
|
||
customToggleFunction: screenReader.toggle,
|
||
icon: icons.screenReader,
|
||
requiresFeature: screenReader,
|
||
enabled: WIDGET_CONFIG.enableScreenReader,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.voiceCommand,
|
||
key: 'voiceControl',
|
||
customToggleFunction: voiceControl.toggle,
|
||
icon: icons.voiceControl,
|
||
requiresFeature: voiceControl,
|
||
enabled: WIDGET_CONFIG.enableVoiceControl,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.textSpacing,
|
||
key: 'textSpacing',
|
||
className: 'snn-text-spacing',
|
||
icon: icons.textSpacing,
|
||
enabled: WIDGET_CONFIG.enableTextSpacing,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.pauseAnimations,
|
||
key: 'pauseAnimations',
|
||
className: 'snn-pause-animations',
|
||
icon: icons.pauseAnimations,
|
||
enabled: WIDGET_CONFIG.enablePauseAnimations,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.hideImages,
|
||
key: 'hideImages',
|
||
icon: icons.hideImages,
|
||
customToggleFunction: toggleHideImages,
|
||
enabled: WIDGET_CONFIG.enableHideImages,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.dyslexiaFriendly,
|
||
key: 'dyslexiaFont',
|
||
className: 'snn-dyslexia-font',
|
||
icon: icons.dyslexiaFont,
|
||
enabled: WIDGET_CONFIG.enableDyslexiaFont,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.biggerCursor,
|
||
key: 'biggerCursor',
|
||
className: 'snn-bigger-cursor',
|
||
icon: icons.biggerCursor,
|
||
enabled: WIDGET_CONFIG.enableBiggerCursor,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.lineHeight,
|
||
key: 'lineHeight',
|
||
className: 'snn-line-height',
|
||
icon: icons.lineHeight,
|
||
enabled: WIDGET_CONFIG.enableLineHeight,
|
||
},
|
||
{
|
||
text: WIDGET_CONFIG.lang.reducedMotion,
|
||
key: 'reducedMotion',
|
||
className: 'snn-reduced-motion',
|
||
icon: icons.reducedMotion,
|
||
enabled: WIDGET_CONFIG.enableReducedMotion,
|
||
},
|
||
];
|
||
|
||
// Add enabled toggle options to grid
|
||
options.forEach((option) => {
|
||
if (option.enabled) {
|
||
const button = createToggleButton(
|
||
option.text,
|
||
option.key,
|
||
option.className,
|
||
option.target,
|
||
option.customToggleFunction,
|
||
option.icon,
|
||
option.requiresFeature
|
||
);
|
||
optionsGrid.appendChild(button);
|
||
}
|
||
});
|
||
|
||
// Add action buttons (font selection and color filters) to grid if enabled
|
||
if (WIDGET_CONFIG.enableFontSelection) {
|
||
const fontButton = createActionButton(WIDGET_CONFIG.lang.fontSelection, handleFontSelection, icons.fontSelection);
|
||
optionsGrid.appendChild(fontButton);
|
||
}
|
||
|
||
if (WIDGET_CONFIG.enableColorFilter) {
|
||
const colorButton = createActionButton(WIDGET_CONFIG.lang.colorFilter, handleColorFilter, icons.colorFilter);
|
||
optionsGrid.appendChild(colorButton);
|
||
}
|
||
|
||
if (WIDGET_CONFIG.enableTextAlign) {
|
||
const textAlignButton = createActionButton(WIDGET_CONFIG.lang.textAlign, handleTextAlign, icons.textAlign);
|
||
optionsGrid.appendChild(textAlignButton);
|
||
}
|
||
|
||
if (WIDGET_CONFIG.enableBiggerText) {
|
||
const biggerTextButton = createActionButton(WIDGET_CONFIG.lang.textSize, handleBiggerText, icons.biggerText);
|
||
optionsGrid.appendChild(biggerTextButton);
|
||
}
|
||
|
||
if (WIDGET_CONFIG.enableHighContrast) {
|
||
const highContrastButton = createActionButton(WIDGET_CONFIG.lang.highContrast, handleHighContrast, icons.highContrast);
|
||
optionsGrid.appendChild(highContrastButton);
|
||
}
|
||
|
||
// Add grid to content
|
||
content.appendChild(optionsGrid);
|
||
|
||
// Add content to menu
|
||
menu.appendChild(content);
|
||
|
||
document.body.appendChild(menu);
|
||
}
|
||
|
||
// ===========================================
|
||
// MENU MANAGEMENT
|
||
// ===========================================
|
||
|
||
// Cache for menu elements
|
||
const menuCache = {
|
||
menu: null,
|
||
button: null,
|
||
closeButton: null,
|
||
init: function() {
|
||
this.menu = document.getElementById('snn-accessibility-menu');
|
||
this.button = document.getElementById('snn-accessibility-button');
|
||
this.closeButton = this.menu?.querySelector('.snn-close');
|
||
}
|
||
};
|
||
|
||
// Menu control functions (optimized)
|
||
function toggleMenu() {
|
||
if (!menuCache.menu) menuCache.init();
|
||
const isOpen = menuCache.menu.style.display === 'block';
|
||
|
||
if (isOpen) {
|
||
closeMenu();
|
||
} else {
|
||
openMenu();
|
||
}
|
||
}
|
||
|
||
function openMenu() {
|
||
if (!menuCache.menu) menuCache.init();
|
||
menuCache.menu.style.display = 'block';
|
||
menuCache.menu.setAttribute('aria-hidden', 'false');
|
||
|
||
if (menuCache.closeButton) {
|
||
menuCache.closeButton.focus();
|
||
}
|
||
|
||
// Add keyboard navigation
|
||
document.addEventListener('keydown', handleMenuKeyboard);
|
||
}
|
||
|
||
function closeMenu() {
|
||
if (!menuCache.menu) menuCache.init();
|
||
menuCache.menu.style.display = 'none';
|
||
menuCache.menu.setAttribute('aria-hidden', 'true');
|
||
|
||
if (menuCache.button) {
|
||
menuCache.button.focus();
|
||
}
|
||
|
||
// Remove keyboard navigation
|
||
document.removeEventListener('keydown', handleMenuKeyboard);
|
||
}
|
||
|
||
// Cache for keyboard navigation elements
|
||
let keyboardCache = {
|
||
focusableElements: null,
|
||
lastUpdate: 0,
|
||
getFocusableElements: function() {
|
||
const now = Date.now();
|
||
if (!this.focusableElements || now - this.lastUpdate > 1000) {
|
||
if (menuCache.menu) {
|
||
this.focusableElements = {
|
||
all: menuCache.menu.querySelectorAll('button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'),
|
||
options: Array.from(menuCache.menu.querySelectorAll('.snn-accessibility-option, .snn-close'))
|
||
};
|
||
this.lastUpdate = now;
|
||
}
|
||
}
|
||
return this.focusableElements;
|
||
}
|
||
};
|
||
|
||
function handleMenuKeyboard(e) {
|
||
if (!menuCache.menu || menuCache.menu.style.display !== 'block') return;
|
||
|
||
if (e.key === 'Escape') {
|
||
e.preventDefault();
|
||
closeMenu();
|
||
return;
|
||
}
|
||
|
||
const elements = keyboardCache.getFocusableElements();
|
||
if (!elements) return;
|
||
|
||
if (e.key === 'Tab') {
|
||
const firstElement = elements.all[0];
|
||
const lastElement = elements.all[elements.all.length - 1];
|
||
|
||
if (e.shiftKey) {
|
||
if (document.activeElement === firstElement) {
|
||
e.preventDefault();
|
||
lastElement.focus();
|
||
}
|
||
} else {
|
||
if (document.activeElement === lastElement) {
|
||
e.preventDefault();
|
||
firstElement.focus();
|
||
}
|
||
}
|
||
}
|
||
|
||
if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
|
||
e.preventDefault();
|
||
const currentIndex = elements.options.indexOf(document.activeElement);
|
||
let nextIndex;
|
||
|
||
if (e.key === 'ArrowDown') {
|
||
nextIndex = currentIndex === elements.options.length - 1 ? 0 : currentIndex + 1;
|
||
} else {
|
||
nextIndex = currentIndex === 0 ? elements.options.length - 1 : currentIndex - 1;
|
||
}
|
||
|
||
elements.options[nextIndex].focus();
|
||
}
|
||
}
|
||
|
||
// ===========================================
|
||
// INITIALIZATION
|
||
// ===========================================
|
||
|
||
// Initialize the widget
|
||
function initAccessibilityWidget() {
|
||
injectStyles();
|
||
applySettings();
|
||
createAccessibilityButton();
|
||
createAccessibilityMenu();
|
||
}
|
||
|
||
// ===========================================
|
||
// WIDGET BOOTSTRAP
|
||
// ===========================================
|
||
|
||
// Load the widget when the DOM is fully loaded
|
||
if (document.readyState === 'loading') {
|
||
document.addEventListener('DOMContentLoaded', initAccessibilityWidget);
|
||
} else {
|
||
initAccessibilityWidget();
|
||
}
|
||
|
||
/*
|
||
===========================================
|
||
WIDGET FEATURES SUMMARY:
|
||
|
||
Core Features:
|
||
- High contrast mode
|
||
- Text size adjustment
|
||
- Text spacing modification
|
||
- Animation pausing
|
||
- Image hiding
|
||
- Dyslexia-friendly font
|
||
- Cursor size adjustment
|
||
- Line height adjustment
|
||
- Text alignment
|
||
|
||
Advanced Features:
|
||
- Screen reader with speech synthesis
|
||
- Voice control with speech recognition
|
||
- Reading mode
|
||
- Enhanced focus indicators
|
||
- Reduced motion mode
|
||
- Font selection (Arial, Times, Verdana)
|
||
- Color blindness filters (Protanopia, Deuteranopia, Tritanopia, Grayscale)
|
||
|
||
Technical Features:
|
||
- Persistent settings via localStorage
|
||
- Full keyboard navigation
|
||
- ARIA compliance
|
||
- Error handling for browser compatibility
|
||
- Performance optimization with DOM caching
|
||
- Single file deployment
|
||
|
||
===========================================
|
||
*/ |