fix(wysiwyg):Improve Wysiwyg editor

ts_web/elements/wysiwyg/dees-input-wysiwyg.ts

@@ -168,7 +168,6 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
       dragHandle.className = 'drag-handle';
       dragHandle.draggable = true;
       dragHandle.addEventListener('dragstart', (e) => this.dragDropHandler.handleDragStart(e, block));
-      dragHandle.addEventListener('dragend', () => this.dragDropHandler.handleDragEnd());
       wrapper.appendChild(dragHandle);
     }
     

ts_web/elements/wysiwyg/instructions.md

@@ -1,3 +1,4 @@
 * We don't use lit template logic, but use static`` here to handle dom operations ourselves
 * We try to have separated concerns in different classes
 * We try to have clean concise and managable code
+* lets log whats happening, so if something goes wrong, we understand whats happening.

ts_web/elements/wysiwyg/wysiwyg.dragdrophandler.ts

@@ -5,6 +5,13 @@ export class WysiwygDragDropHandler {
   private draggedBlockId: string | null = null;
   private dragOverBlockId: string | null = null;
   private dragOverPosition: 'before' | 'after' | null = null;
+  private dropIndicator: HTMLElement | null = null;
+  private initialMouseY: number = 0;
+  private initialBlockY: number = 0;
+  private draggedBlockElement: HTMLElement | null = null;
+  private draggedBlockHeight: number = 0;
+  private lastUpdateTime: number = 0;
+  private updateThrottle: number = 80; // milliseconds
 
   constructor(component: any) {
     this.component = component;
@@ -31,26 +38,71 @@ export class WysiwygDragDropHandler {
     e.dataTransfer.effectAllowed = 'move';
     e.dataTransfer.setData('text/plain', block.id);
     
-    // Update component state (for parent drag handler access)
+    // Hide the default drag image
+    const emptyImg = new Image();
+    emptyImg.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs=';
+    e.dataTransfer.setDragImage(emptyImg, 0, 0);
+    
+    // Store initial mouse position and block element
+    this.initialMouseY = e.clientY;
+    this.draggedBlockElement = this.component.editorContentRef.querySelector(`[data-block-id="${block.id}"]`);
+    
+    if (this.draggedBlockElement) {
+      const rect = this.draggedBlockElement.getBoundingClientRect();
+      this.draggedBlockHeight = rect.height;
+      this.initialBlockY = rect.top;
+      
+      // Create drop indicator
+      this.createDropIndicator();
+      
+      // Set up drag event listeners
+      document.addEventListener('dragover', this.handleGlobalDragOver);
+      document.addEventListener('dragend', this.handleGlobalDragEnd);
+    }
+    
+    // Update component state
     this.component.draggedBlockId = this.draggedBlockId;
     
-    // The parent component already handles adding dragging classes programmatically
+    // Add dragging class after a small delay
+    setTimeout(() => {
+      if (this.draggedBlockElement) {
+        this.draggedBlockElement.classList.add('dragging');
+      }
+      if (this.component.editorContentRef) {
+        this.component.editorContentRef.classList.add('dragging');
+      }
+    }, 10);
   }
 
   /**
    * Handles drag end
    */
   handleDragEnd(): void {
+    // Clean up visual state
+    const allBlocks = this.component.editorContentRef.querySelectorAll('.block-wrapper');
+    allBlocks.forEach((block: HTMLElement) => {
+      block.classList.remove('dragging', 'move-up', 'move-down');
+      block.style.removeProperty('--drag-offset');
+      block.style.removeProperty('transform');
+    });
+    
+    // Remove dragging class from editor
+    if (this.component.editorContentRef) {
+      this.component.editorContentRef.classList.remove('dragging');
+    }
+    
+    // Reset drag state
     this.draggedBlockId = null;
     this.dragOverBlockId = null;
     this.dragOverPosition = null;
+    this.draggedBlockElement = null;
+    this.draggedBlockHeight = 0;
+    this.initialBlockY = 0;
     
     // Update component state
     this.component.draggedBlockId = null;
     this.component.dragOverBlockId = null;
     this.component.dragOverPosition = null;
-    
-    // The parent component already handles removing dragging classes programmatically
   }
 
   /**
@@ -126,4 +178,227 @@ export class WysiwygDragDropHandler {
     if (!this.isDragOver(blockId)) return '';
     return this.dragOverPosition === 'before' ? 'drag-over-before' : 'drag-over-after';
   }
+
+
+  /**
+   * Creates the drop indicator element
+   */
+  private createDropIndicator(): void {
+    this.dropIndicator = document.createElement('div');
+    this.dropIndicator.className = 'drop-indicator';
+    this.dropIndicator.style.display = 'none';
+    this.component.editorContentRef.appendChild(this.dropIndicator);
+  }
+
+  /**
+   * Handles global dragover to update dragged block position and move other blocks
+   */
+  private handleGlobalDragOver = (e: DragEvent): void => {
+    e.preventDefault();
+    
+    if (!this.draggedBlockElement) return;
+    
+    // Calculate vertical offset from initial position
+    const deltaY = e.clientY - this.initialMouseY;
+    
+    // Apply transform to move the dragged block vertically
+    this.draggedBlockElement.style.transform = `translateY(${deltaY}px)`;
+    
+    // Throttle position updates to reduce stuttering
+    const now = Date.now();
+    if (now - this.lastUpdateTime < this.updateThrottle) {
+      return;
+    }
+    this.lastUpdateTime = now;
+    
+    // Calculate which blocks should move
+    this.updateBlockPositions(e.clientY);
+  };
+
+  /**
+   * Updates block positions based on cursor position
+   */
+  private updateBlockPositions(mouseY: number): void {
+    const blocks = Array.from(this.component.editorContentRef.querySelectorAll('.block-wrapper')) as HTMLElement[];
+    const draggedIndex = blocks.findIndex(b => b.getAttribute('data-block-id') === this.draggedBlockId);
+    
+    if (draggedIndex === -1) return;
+    
+    // Reset all transforms first (except the dragged block)
+    blocks.forEach(block => {
+      if (block.getAttribute('data-block-id') !== this.draggedBlockId) {
+        block.classList.remove('move-up', 'move-down');
+        block.style.removeProperty('--drag-offset');
+      }
+    });
+    
+    // Calculate where the dragged block should be inserted
+    let newIndex = blocks.length; // Default to end
+    
+    for (let i = 0; i < blocks.length; i++) {
+      if (i === draggedIndex) continue;
+      
+      const block = blocks[i];
+      const rect = block.getBoundingClientRect();
+      const blockTop = rect.top;
+      
+      // Check if mouse is above this block's middle
+      if (mouseY < blockTop + (rect.height * 0.5)) {
+        newIndex = i;
+        break;
+      }
+    }
+    
+    
+    // Apply transforms to move blocks out of the way
+    for (let i = 0; i < blocks.length; i++) {
+      if (i === draggedIndex) continue;
+      
+      const block = blocks[i];
+      
+      // Determine if this block needs to move
+      if (draggedIndex < newIndex) {
+        // Dragging down: blocks between original and new position move up
+        if (i > draggedIndex && i < newIndex) {
+          block.classList.add('move-up');
+          block.style.setProperty('--drag-offset', `${this.draggedBlockHeight}px`);
+        }
+      } else if (draggedIndex > newIndex) {
+        // Dragging up: blocks between new and original position move down
+        if (i >= newIndex && i < draggedIndex) {
+          block.classList.add('move-down');
+          block.style.setProperty('--drag-offset', `${this.draggedBlockHeight}px`);
+        }
+      }
+    }
+    
+    // Update drop indicator position
+    this.updateDropIndicator(blocks, newIndex, draggedIndex);
+  }
+
+  /**
+   * Updates the drop indicator position
+   */
+  private updateDropIndicator(blocks: HTMLElement[], targetIndex: number, draggedIndex: number): void {
+    if (!this.dropIndicator || !this.draggedBlockElement) return;
+    
+    this.dropIndicator.style.display = 'block';
+    this.dropIndicator.style.height = `${this.draggedBlockHeight}px`;
+    
+    const containerRect = this.component.editorContentRef.getBoundingClientRect();
+    // Calculate where the block will actually land
+    let topPosition = 0;
+    
+    if (targetIndex === 0) {
+      // Before first block
+      topPosition = 0;
+    } else {
+      // After a specific block
+      const prevIndex = targetIndex - 1;
+      let blockCount = 0;
+      
+      // Find the visual position of the block that will be before our dropped block
+      for (let i = 0; i < blocks.length; i++) {
+        if (i === draggedIndex) continue; // Skip the dragged block
+        
+        if (blockCount === prevIndex) {
+          const rect = blocks[i].getBoundingClientRect();
+          topPosition = rect.bottom - containerRect.top + 16; // 16px gap
+          break;
+        }
+        blockCount++;
+      }
+    }
+    
+    this.dropIndicator.style.top = `${topPosition}px`;
+  }
+
+  /**
+   * Handles global drag end
+   */
+  private handleGlobalDragEnd = (): void => {
+    // Clean up event listeners
+    document.removeEventListener('dragover', this.handleGlobalDragOver);
+    document.removeEventListener('dragend', this.handleGlobalDragEnd);
+    
+    // Remove drop indicator
+    if (this.dropIndicator) {
+      this.dropIndicator.remove();
+      this.dropIndicator = null;
+    }
+    
+    // Trigger the actual drop if we have a dragged block
+    if (this.draggedBlockId) {
+      // Small delay to ensure transforms are applied
+      requestAnimationFrame(() => {
+        this.performDrop();
+        // Call the regular drag end handler after drop
+        this.handleDragEnd();
+      });
+    } else {
+      // Call the regular drag end handler
+      this.handleDragEnd();
+    }
+  };
+
+  /**
+   * Performs the actual drop operation
+   */
+  private performDrop(): void {
+    if (!this.draggedBlockId) return;
+    
+    // Get the visual order of blocks based on their positions
+    const blockElements = Array.from(this.component.editorContentRef.querySelectorAll('.block-wrapper')) as HTMLElement[];
+    const draggedElement = blockElements.find(el => el.getAttribute('data-block-id') === this.draggedBlockId);
+    
+    if (!draggedElement) return;
+    
+    
+    // Create an array of blocks with their visual positions
+    const visualOrder = blockElements.map(el => {
+      const id = el.getAttribute('data-block-id');
+      const rect = el.getBoundingClientRect();
+      const centerY = rect.top + rect.height / 2;
+      return { id, centerY, element: el };
+    });
+    
+    // Sort by visual Y position
+    visualOrder.sort((a, b) => a.centerY - b.centerY);
+    
+    // Get the new order of block IDs
+    const newBlockIds = visualOrder.map(item => item.id).filter(id => id !== null);
+    
+    // Find the original block data
+    const originalBlocks = [...this.component.blocks];
+    const draggedBlock = originalBlocks.find(b => b.id === this.draggedBlockId);
+    
+    if (!draggedBlock) return;
+    
+    // Check if order actually changed
+    const oldOrder = originalBlocks.map(b => b.id);
+    const orderChanged = !newBlockIds.every((id, index) => id === oldOrder[index]);
+    
+    if (!orderChanged) {
+      return;
+    }
+    
+    // Reorder blocks based on visual positions
+    const newBlocks = newBlockIds.map(id => originalBlocks.find(b => b.id === id)!).filter(Boolean);
+    
+    // Update blocks
+    this.component.blocks = newBlocks;
+    
+    // Re-render blocks programmatically
+    this.component.renderBlocksProgrammatically();
+    
+    // Update value
+    this.component.updateValue();
+    
+    // Focus the moved block after a delay
+    setTimeout(() => {
+      if (draggedBlock.type !== 'divider') {
+        this.component.blockOperations.focusBlock(draggedBlock.id);
+      }
+    }, 100);
+  }
 }

ts_web/elements/wysiwyg/wysiwyg.styles.ts

@@ -326,7 +326,7 @@ export const wysiwygStyles = css`
   /* Drag and Drop Styles */
   .block-wrapper {
     position: relative;
-    transition: all 0.2s ease;
+    transition: transform 0.3s ease, opacity 0.2s ease;
   }
 
   /* Ensure proper spacing context for blocks */
@@ -385,31 +385,41 @@ export const wysiwygStyles = css`
   }
 
   .block-wrapper.dragging {
-    opacity: 0.5;
+    opacity: 0.8;
+    pointer-events: none;
+    position: relative;
+    z-index: 2001;
+    transition: none !important;
   }
 
-  .block-wrapper.drag-over-before::before {
-    content: '';
-    position: absolute;
-    top: -8px;
-    left: -8px;
-    right: -8px;
-    height: 2px;
-    background: ${cssManager.bdTheme('#0066cc', '#4d94ff')};
-    border-radius: 1px;
-    box-shadow: 0 0 8px ${cssManager.bdTheme('rgba(0, 102, 204, 0.4)', 'rgba(77, 148, 255, 0.4)')};
+
+  /* Blocks that should move out of the way */
+  .block-wrapper.move-down {
+    transform: translateY(var(--drag-offset, 0px));
   }
 
-  .block-wrapper.drag-over-after::after {
-    content: '';
+  .block-wrapper.move-up {
+    transform: translateY(calc(-1 * var(--drag-offset, 0px)));
+  }
+
+  /* Drop indicator */
+  .drop-indicator {
     position: absolute;
-    bottom: -8px;
-    left: -8px;
-    right: -8px;
-    height: 2px;
-    background: ${cssManager.bdTheme('#0066cc', '#4d94ff')};
-    border-radius: 1px;
-    box-shadow: 0 0 8px ${cssManager.bdTheme('rgba(0, 102, 204, 0.4)', 'rgba(77, 148, 255, 0.4)')};
+    left: 0;
+    right: 0;
+    background: ${cssManager.bdTheme('rgba(0, 102, 204, 0.08)', 'rgba(77, 148, 255, 0.08)')};
+    border: 2px dashed ${cssManager.bdTheme('#0066cc', '#4d94ff')};
+    border-radius: 8px;
+    transition: top 0.2s ease, height 0.2s ease;
+    pointer-events: none;
+    z-index: 1999;
+    box-sizing: border-box;
+  }
+
+  /* Remove old drag-over styles */
+  .block-wrapper.drag-over-before,
+  .block-wrapper.drag-over-after {
+    /* No longer needed, using drop indicator instead */
   }
 
   .editor-content.dragging * {