refactor: implement view mode toggle using Alpine.js for draft/published states

index.html

@@ -196,7 +196,7 @@
             <div class="resize-handle" id="resize-handle-1"></div>
 
             <!-- Editor Panel -->
-            <div class="panel editor-panel" id="editor-panel">
+            <div class="panel editor-panel" id="editor-panel" x-data>
                 <div class="panel-header">
                     <span>Editor</span>
                     <div class="editor-controls">
@@ -205,8 +205,16 @@
                         <button class="btn btn-action revert" id="revert-btn" title="Discard draft and revert to published version">Revert</button>
                         <span class="view-label">View:</span>
                         <div class="view-toggle-group">
-                            <button class="btn btn-toggle active" id="view-draft" title="View and edit draft version">Draft</button>
-                            <button class="btn btn-toggle" id="view-published" title="View published version (read-only if draft exists)">Published</button>
+                            <button class="btn btn-toggle"
+                                    id="view-draft"
+                                    :class="{ 'active': $store.snippets.viewMode === 'draft' }"
+                                    @click="$store.snippets.viewMode = 'draft'; switchViewMode('draft')"
+                                    title="View and edit draft version">Draft</button>
+                            <button class="btn btn-toggle"
+                                    id="view-published"
+                                    :class="{ 'active': $store.snippets.viewMode === 'published' }"
+                                    @click="$store.snippets.viewMode = 'published'; switchViewMode('published')"
+                                    title="View published version (read-only if draft exists)">Published</button>
                         </div>
                     </div>
                 </div>

project-docs/alpine-migration-plan.md

@@ -104,26 +104,38 @@ Incremental migration of Astrolabe from vanilla JavaScript to Alpine.js for reac
 
 ---
 
-## Phase 3: View Mode Toggle (Draft/Published)
+## Phase 3: View Mode Toggle (Draft/Published) ✅ COMPLETE
 
-**Status**: Planned
-**Files**: `index.html`, `src/js/snippet-manager.js`
+**Status**: Done
+**Files**: `index.html`, `src/js/snippet-manager.js`, `src/js/app.js`, `src/js/config.js`
 
-### What to Convert
+### What Was Converted
 
-View mode toggle buttons (Draft/Published) currently use manual class manipulation.
+- View mode toggle buttons (Draft/Published) with `:class` binding and `@click` handlers
+- All references to `currentViewMode` global variable now use Alpine store
+- Removed vanilla event listeners from app.js
+- Removed `currentViewMode` global variable from config.js
 
 ### Implementation Approach
 
-1. Add `viewMode` property to Alpine snippets store (default: 'draft')
-2. Convert button HTML to use `:class` binding and `@click` handlers
-3. Update `loadSnippetIntoEditor()` to read view mode from Alpine store
-4. Remove `updateViewModeUI()` function (no longer needed)
+1. Added `viewMode` property to Alpine snippets store (default: 'draft')
+2. Converted button HTML to use `:class` binding and `@click` handlers
+3. Updated all references to `currentViewMode` to use `Alpine.store('snippets').viewMode`
+4. Simplified `updateViewModeUI()` function (now only handles publish/revert button visibility)
+5. Removed vanilla event listeners from app.js
 
 ### What Stays Vanilla
 
 - Editor integration logic
 - Publish/discard actions
+- Publish/revert button visibility logic (handled by `updateViewModeUI`)
+
+### Key Learnings
+
+- Alpine store provides clean reactive state for view mode
+- Toggle button active states now automatically update via Alpine `:class` binding
+- All business logic references updated to use Alpine store instead of global variable
+- `updateViewModeUI` simplified but still needed for publish/revert button management
 
 ---
 
@@ -248,7 +260,7 @@ Toast notification system with auto-dismiss.
 
 1. ✅ **Phase 1: Snippet Panel** - DONE
 2. ✅ **Phase 2: Dataset Manager** - DONE
-3. **Phase 3: View Mode Toggle** - Quick win
+3. ✅ **Phase 3: View Mode Toggle** - DONE
 4. **Phase 4: Settings Modal** - Another modal, builds confidence
 5. **Phase 6: Meta Fields** - Before Chart Builder (simpler)
 6. **Phase 7: Panel Toggles** - Quick win

src/js/app.js

@@ -367,14 +367,7 @@ document.addEventListener('DOMContentLoaded', function () {
         }
     });
 
-    // View mode toggle buttons
-    document.getElementById('view-draft').addEventListener('click', () => {
-        switchViewMode('draft');
-    });
-
-    document.getElementById('view-published').addEventListener('click', () => {
-        switchViewMode('published');
-    });
+    // View mode toggle buttons (now handled by Alpine.js in index.html)
 
     // Preview fit mode buttons
     document.getElementById('preview-fit-default').addEventListener('click', () => {
@@ -481,7 +474,7 @@ const KeyboardActions = {
     },
 
     publishDraft: function() {
-        if (currentViewMode === 'draft' && window.currentSnippetId) {
+        if (Alpine.store('snippets').viewMode === 'draft' && window.currentSnippetId) {
             publishDraft();
         }
     },

src/js/config.js

@@ -4,7 +4,6 @@ const APP_VERSION = '0.3.0';
 // Global variables and configuration
 let editor; // Global editor instance
 let renderTimeout; // For debouncing
-let currentViewMode = 'draft'; // Track current view mode: 'draft' or 'published'
 
 // Panel resizing variables
 let isResizing = false;

src/js/snippet-manager.js

@@ -4,7 +4,8 @@
 // Business logic stays in SnippetStorage
 document.addEventListener('alpine:init', () => {
     Alpine.store('snippets', {
-        currentSnippetId: null
+        currentSnippetId: null,
+        viewMode: 'draft' // 'draft' or 'published'
     });
 });
 
@@ -559,7 +560,7 @@ function autoSaveDraft() {
     if (!window.currentSnippetId || !editor) return;
 
     // Only save to draft if we're in draft mode
-    if (currentViewMode !== 'draft') return;
+    if (Alpine.store('snippets').viewMode !== 'draft') return;
 
     try {
         const currentSpec = JSON.parse(editor.getValue());
@@ -592,13 +593,13 @@ function debouncedAutoSave() {
     if (window.isUpdatingEditor) return;
 
     // If viewing published and no draft exists, create draft automatically
-    if (currentViewMode === 'published') {
+    if (Alpine.store('snippets').viewMode === 'published') {
         const snippet = getCurrentSnippet();
         if (snippet) {
             const hasDraft = JSON.stringify(snippet.spec) !== JSON.stringify(snippet.draftSpec);
             if (!hasDraft) {
                 // No draft exists, automatically switch to draft mode
-                currentViewMode = 'draft';
+                Alpine.store('snippets').viewMode = 'draft';
                 updateViewModeUI(snippet);
                 editor.updateOptions({ readOnly: false });
             }
@@ -859,7 +860,7 @@ async function extractToDataset() {
         SnippetStorage.saveSnippet(snippet);
 
         // Update editor with new spec
-        if (editor && currentViewMode === 'draft') {
+        if (editor && Alpine.store('snippets').viewMode === 'draft') {
             window.isUpdatingEditor = true;
             editor.setValue(JSON.stringify(snippet.draftSpec, null, 2));
             window.isUpdatingEditor = false;
@@ -935,7 +936,7 @@ function loadSnippetIntoEditor(snippet) {
 
     const hasDraft = JSON.stringify(snippet.spec) !== JSON.stringify(snippet.draftSpec);
 
-    if (currentViewMode === 'draft') {
+    if (Alpine.store('snippets').viewMode === 'draft') {
         editor.setValue(JSON.stringify(snippet.draftSpec, null, 2));
         editor.updateOptions({ readOnly: false });
     } else {
@@ -954,19 +955,11 @@ function updateViewModeUI(snippet) {
     const publishBtn = document.getElementById('publish-btn');
     const revertBtn = document.getElementById('revert-btn');
 
-    // Update toggle button states
-    if (currentViewMode === 'draft') {
-        draftBtn.classList.add('active');
-        publishedBtn.classList.remove('active');
-    } else {
-        draftBtn.classList.remove('active');
-        publishedBtn.classList.add('active');
-    }
-
-    // Show/hide and enable/disable action buttons based on mode
+    // Update toggle button states (now handled by Alpine :class binding)
+    // But we still need to update the action buttons (publish/revert)
     const hasDraft = JSON.stringify(snippet.spec) !== JSON.stringify(snippet.draftSpec);
 
-    if (currentViewMode === 'draft') {
+    if (Alpine.store('snippets').viewMode === 'draft') {
         // In draft mode: show both buttons, enable based on draft existence
         publishBtn.classList.add('visible');
         revertBtn.classList.add('visible');
@@ -981,7 +974,7 @@ function updateViewModeUI(snippet) {
 
 // Switch view mode
 function switchViewMode(mode) {
-    currentViewMode = mode;
+    Alpine.store('snippets').viewMode = mode;
     const snippet = getCurrentSnippet();
     if (snippet) {
         loadSnippetIntoEditor(snippet);
@@ -1026,7 +1019,7 @@ function revertDraft() {
         SnippetStorage.saveSnippet(snippet);
 
         // Reload editor if in draft view
-        if (currentViewMode === 'draft') {
+        if (Alpine.store('snippets').viewMode === 'draft') {
             loadSnippetIntoEditor(snippet);
         }