Issue #889 - Clean up the Pale Moon tree - Part 1b: Move newtab to components

1 files changed, 0 insertions, 232 deletions

diff --git a/application/palemoon/base/content/newtab/dropTargetShim.js b/application/palemoon/base/content/newtab/dropTargetShim.js
deleted file mode 100644
index 57a97fa00..000000000
--- a/application/palemoon/base/content/newtab/dropTargetShim.js
+++ /dev/null
@@ -1,232 +0,0 @@
-#ifdef 0
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-#endif
-
-/**
- * This singleton provides a custom drop target detection. We need this because
- * the default DnD target detection relies on the cursor's position. We want
- * to pick a drop target based on the dragged site's position.
- */
-var gDropTargetShim = {
-  /**
-   * Cache for the position of all cells, cleaned after drag finished.
-   */
-  _cellPositions: null,
-
-  /**
-   * The last drop target that was hovered.
-   */
-  _lastDropTarget: null,
-
-  /**
-   * Initializes the drop target shim.
-   */
-  init: function () {
-    gGrid.node.addEventListener("dragstart", this, true);
-  },
-
-  /**
-   * Add all event listeners needed during a drag operation.
-   */
-  _addEventListeners: function () {
-    gGrid.node.addEventListener("dragend", this);
-
-    let docElement = document.documentElement;
-    docElement.addEventListener("dragover", this);
-    docElement.addEventListener("dragenter", this);
-    docElement.addEventListener("drop", this);
-  },
-
-  /**
-   * Remove all event listeners that were needed during a drag operation.
-   */
-  _removeEventListeners: function () {
-    gGrid.node.removeEventListener("dragend", this);
-
-    let docElement = document.documentElement;
-    docElement.removeEventListener("dragover", this);
-    docElement.removeEventListener("dragenter", this);
-    docElement.removeEventListener("drop", this);
-  },
-
-  /**
-   * Handles all shim events.
-   */
-  handleEvent: function (aEvent) {
-    switch (aEvent.type) {
-      case "dragstart":
-        this._dragstart(aEvent);
-        break;
-      case "dragenter":
-        aEvent.preventDefault();
-        break;
-      case "dragover":
-        this._dragover(aEvent);
-        break;
-      case "drop":
-        this._drop(aEvent);
-        break;
-      case "dragend":
-        this._dragend(aEvent);
-        break;
-    }
-  },
-
-  /**
-   * Handles the 'dragstart' event.
-   * @param aEvent The 'dragstart' event.
-   */
-  _dragstart: function (aEvent) {
-    if (aEvent.target.classList.contains("newtab-link")) {
-      gGrid.lock();
-      this._addEventListeners();
-    }
-  },
-
-  /**
-   * Handles the 'dragover' event.
-   * @param aEvent The 'dragover' event.
-   */
-  _dragover: function (aEvent) {
-    // XXX bug 505521 - Use the dragover event to retrieve the
-    //                  current mouse coordinates while dragging.
-    let sourceNode = aEvent.dataTransfer.mozSourceNode.parentNode;
-    gDrag.drag(sourceNode._newtabSite, aEvent);
-
-    // Find the current drop target, if there's one.
-    this._updateDropTarget(aEvent);
-
-    // If we have a valid drop target,
-    // let the drag-and-drop service know.
-    if (this._lastDropTarget) {
-      aEvent.preventDefault();
-    }
-  },
-
-  /**
-   * Handles the 'drop' event.
-   * @param aEvent The 'drop' event.
-   */
-  _drop: function (aEvent) {
-    // We're accepting all drops.
-    aEvent.preventDefault();
-
-    // remember that drop event was seen, this explicitly
-    // assumes that drop event preceeds dragend event
-    this._dropSeen = true;
-
-    // Make sure to determine the current drop target
-    // in case the dragover event hasn't been fired.
-    this._updateDropTarget(aEvent);
-
-    // A site was successfully dropped.
-    this._dispatchEvent(aEvent, "drop", this._lastDropTarget);
-  },
-
-  /**
-   * Handles the 'dragend' event.
-   * @param aEvent The 'dragend' event.
-   */
-  _dragend: function (aEvent) {
-    if (this._lastDropTarget) {
-      if (aEvent.dataTransfer.mozUserCancelled || !this._dropSeen) {
-        // The drag operation was cancelled or no drop event was generated
-        this._dispatchEvent(aEvent, "dragexit", this._lastDropTarget);
-        this._dispatchEvent(aEvent, "dragleave", this._lastDropTarget);
-      }
-
-      // Clean up.
-      this._lastDropTarget = null;
-      this._cellPositions = null;
-    }
-
-    this._dropSeen = false;
-    gGrid.unlock();
-    this._removeEventListeners();
-  },
-
-  /**
-   * Tries to find the current drop target and will fire
-   * appropriate dragenter, dragexit, and dragleave events.
-   * @param aEvent The current drag event.
-   */
-  _updateDropTarget: function (aEvent) {
-    // Let's see if we find a drop target.
-    let target = this._findDropTarget(aEvent);
-
-    if (target != this._lastDropTarget) {
-      if (this._lastDropTarget)
-        // We left the last drop target.
-        this._dispatchEvent(aEvent, "dragexit", this._lastDropTarget);
-
-      if (target)
-        // We're now hovering a (new) drop target.
-        this._dispatchEvent(aEvent, "dragenter", target);
-
-      if (this._lastDropTarget)
-        // We left the last drop target.
-        this._dispatchEvent(aEvent, "dragleave", this._lastDropTarget);
-
-      this._lastDropTarget = target;
-    }
-  },
-
-  /**
-   * Determines the current drop target by matching the dragged site's position
-   * against all cells in the grid.
-   * @return The currently hovered drop target or null.
-   */
-  _findDropTarget: function () {
-    // These are the minimum intersection values - we want to use the cell if
-    // the site is >= 50% hovering its position.
-    let minWidth = gDrag.cellWidth / 2;
-    let minHeight = gDrag.cellHeight / 2;
-
-    let cellPositions = this._getCellPositions();
-    let rect = gTransformation.getNodePosition(gDrag.draggedSite.node);
-
-    // Compare each cell's position to the dragged site's position.
-    for (let i = 0; i < cellPositions.length; i++) {
-      let inter = rect.intersect(cellPositions[i].rect);
-
-      // If the intersection is big enough we found a drop target.
-      if (inter.width >= minWidth && inter.height >= minHeight)
-        return cellPositions[i].cell;
-    }
-
-    // No drop target found.
-    return null;
-  },
-
-  /**
-   * Gets the positions of all cell nodes.
-   * @return The (cached) cell positions.
-   */
-  _getCellPositions: function DropTargetShim_getCellPositions() {
-    if (this._cellPositions)
-      return this._cellPositions;
-
-    return this._cellPositions = gGrid.cells.map(function (cell) {
-      return {cell: cell, rect: gTransformation.getNodePosition(cell.node)};
-    });
-  },
-
-  /**
-   * Dispatches a custom DragEvent on the given target node.
-   * @param aEvent The source event.
-   * @param aType The event type.
-   * @param aTarget The target node that receives the event.
-   */
-  _dispatchEvent: function (aEvent, aType, aTarget) {
-    let node = aTarget.node;
-    let event = document.createEvent("DragEvent");
-
-    // The event should not bubble to prevent recursion.
-    event.initDragEvent(aType, false, true, window, 0, 0, 0, 0, 0, false, false,
-                        false, false, 0, node, aEvent.dataTransfer);
-
-    node.dispatchEvent(event);
-  }
-};