components/app-header.js

class FloatingControls extends HTMLElement {
    constructor() {
        super();
        this.hasFile = false;
    }
    
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    position: fixed;
                    bottom: 24px;
                    left: 50%;
                    transform: translateX(-50%);
                    z-index: 100;
                    width: auto;
                    max-width: 90vw;
                }
                
                .controls-container {
                    background: rgba(255, 255, 255, 0.95);
                    backdrop-filter: blur(20px);
                    -webkit-backdrop-filter: blur(20px);
                    border: 1px solid rgba(226, 232, 240, 0.8);
                    border-radius: 16px;
                    padding: 12px 16px;
                    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.05);
                    display: flex;
                    align-items: center;
                    gap: 8px;
                    flex-wrap: wrap;
                    justify-content: center;
                    transition: all 0.3s ease;
                }
                
                .controls-container.disabled {
                    opacity: 0.5;
                    pointer-events: none;
                }
                
                .btn-group {
                    display: flex;
                    gap: 4px;
                    padding: 0 8px;
                    border-right: 1px solid #e2e8f0;
                }
                
                .btn-group:last-child {
                    border-right: none;
                }
                
                button {
                    display: flex;
                    align-items: center;
                    gap: 6px;
                    padding: 8px 14px;
                    border: none;
                    border-radius: 10px;
                    font-size: 0.875rem;
                    font-weight: 500;
                    cursor: pointer;
                    transition: all 0.2s ease;
                    font-family: 'Sarabun', sans-serif;
                    white-space: nowrap;
                }
                
                button:hover {
                    transform: translateY(-1px);
                }
                
                button:active {
                    transform: translateY(0);
                }
                
                .btn-primary {
                    background: linear-gradient(135deg, #2563eb, #3b82f6);
                    color: white;
                    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
                }
                
                .btn-primary:hover {
                    box-shadow: 0 8px 12px -2px rgba(37, 99, 235, 0.3);
                }
                
                .btn-secondary {
                    background: #f1f5f9;
                    color: #475569;
                    border: 1px solid #e2e8f0;
                }
                
                .btn-secondary:hover {
                    background: #e2e8f0;
                    color: #1e293b;
                }
                
                .btn-success {
                    background: linear-gradient(135deg, #059669, #10b981);
                    color: white;
                    box-shadow: 0 4px 6px -1px rgba(5, 150, 105, 0.2);
                }
                
                .btn-success:hover {
                    box-shadow: 0 8px 12px -2px rgba(5, 150, 105, 0.3);
                }
                
                .btn-export {
                    background: #fffbeb;
                    color: #d97706;
                    border: 1px solid #fcd34d;
                }
                
                .btn-export:hover {
                    background: #fef3c7;
                }
                
                .separator {
                    width: 1px;
                    height: 24px;
                    background: #e2e8f0;
                    margin: 0 4px;
                }
                
                .icon {
                    width: 16px;
                    height: 16px;
                }
                
                @media (max-width: 640px) {
                    .controls-container {
                        padding: 8px 12px;
                        gap: 4px;
                    }
                    
                    button {
                        padding: 6px 10px;
                        font-size: 0.75rem;
                    }
                    
                    button span {
                        display: none;
                    }
                    
                    .icon {
                        width: 18px;
                        height: 18px;
                    }
                }
                
                @keyframes slide-up {
                    from {
                        opacity: 0;
                        transform: translateY(20px) translateX(-50%);
                    }
                    to {
                        opacity: 1;
                        transform: translateY(0) translateX(-50%);
                    }
                }
                
                :host {
                    animation: slide-up 0.4s ease-out;
                }
            </style>
            <div class="controls-container" id="controls-container">
                <div class="btn-group">
                    <button class="btn-primary" id="analyze-btn" title="วิเคราะห์โครงสร้าง PDF">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                            <polyline points="14 2 14 8 20 8"></polyline>
                            <line x1="16" y1="13" x2="8" y2="13"></line>
                            <line x1="16" y1="17" x2="8" y2="17"></line>
                            <polyline points="10 9 9 9 8 9"></polyline>
                        </svg>
                        <span>วิเคราะห์ PDF</span>
                    </button>
                    <button class="btn-success" id="ocr-btn" title="OCR ภาษาไทย">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z"></path>
                            <path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z"></path>
                        </svg>
                        <span>OCR ไทย</span>
                    </button>
                </div>
                
                <div class="btn-group">
                    <button class="btn-secondary" id="copy-btn" title="คัดลอกทั้งหมด">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <rect x="9" y="9" width="13" height="13" rx="2" ry="2"></rect>
                            <path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"></path>
                        </svg>
                        <span>คัดลอก</span>
                    </button>
                </div>
                
                <div class="btn-group">
                    <button class="btn-export" id="export-json-btn" title="Export JSON">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <polyline points="4 17 10 11 4 5"></polyline>
                            <line x1="12" y1="19" x2="20" y2="19"></line>
                        </svg>
                        <span>JSON</span>
                    </button>
                    <button class="btn-export" id="export-csv-btn" title="Export CSV">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                            <polyline points="14 2 14 8 20 8"></polyline>
                            <line x1="16" y1="13" x2="8" y2="13"></line>
                            <line x1="16" y1="17" x2="8" y2="17"></line>
                            <polyline points="10 9 9 9 8 9"></polyline>
                        </svg>
                        <span>CSV</span>
                    </button>
                    <button class="btn-export" id="export-excel-btn" title="Export Excel">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                            <polyline points="14 2 14 8 20 8"></polyline>
                            <path d="M8 13h8"></path>
                            <path d="M8 17h8"></path>
                            <path d="M9 9h6"></path>
                        </svg>
                        <span>Excel</span>
                    </button>
                    <button class="btn-export" id="export-html-btn" title="Export HTML+CSS+JS">
                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="m13 2-2 2.5h3zm-2 2.5L9 7h3zm-2 2.5L6 9.5h3zm-2 2.5L3 12h3zm8-5L11 7h3zm-2 2.5L9 9.5h3zm-2 2.5L7 12h3z"></path>
                            <path d="M14 2v10a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2z"></path>
                        </svg>
                        <span>HTML</span>
                    </button>
</div>
            </div>
`;
        
        this.setupEventListeners();
        this.updateState();
    }
    
    setupEventListeners() {
        // Listen for events from script.js to know when file is loaded
        document.addEventListener('file-selected', () => {
            this.hasFile = true;
            this.updateState();
        });
        
        document.addEventListener('reset-app', () => {
            this.hasFile = false;
            this.updateState();
        });
        
        // Button click handlers
        this.shadowRoot.getElementById('analyze-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('analyze-pdf', { bubbles: true, composed: true }));
        });
        
        this.shadowRoot.getElementById('ocr-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('ocr-thai', { bubbles: true, composed: true }));
        });
        
        this.shadowRoot.getElementById('copy-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('copy-all', { bubbles: true, composed: true }));
        });
        
        this.shadowRoot.getElementById('export-json-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('export-json', { bubbles: true, composed: true }));
        });
        
        this.shadowRoot.getElementById('export-csv-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('export-csv', { bubbles: true, composed: true }));
        });
        this.shadowRoot.getElementById('export-excel-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('export-excel', { bubbles: true, composed: true }));
        });
        
        this.shadowRoot.getElementById('export-html-btn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('export-html', { bubbles: true, composed: true }));
        });
}
    updateState() {
        const container = this.shadowRoot.getElementById('controls-container');
        if (this.hasFile) {
            container.classList.remove('disabled');
        } else {
            container.classList.add('disabled');
        }
    }

    // Make the controls always visible by removing the disabled class
    showControls() {
        const container = this.shadowRoot.getElementById('controls-container');
        container.classList.remove('disabled');
    }
}

customElements.define('floating-controls', FloatingControls);