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-rw-r--r--application/palemoon/base/content/newtab/cells.js126
1 files changed, 126 insertions, 0 deletions
diff --git a/application/palemoon/base/content/newtab/cells.js b/application/palemoon/base/content/newtab/cells.js
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+++ b/application/palemoon/base/content/newtab/cells.js
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+#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 class manages a cell's DOM node (not the actually cell content, a site).
+ * It's mostly read-only, i.e. all manipulation of both position and content
+ * aren't handled here.
+ */
+function Cell(aGrid, aNode) {
+ this._grid = aGrid;
+ this._node = aNode;
+ this._node._newtabCell = this;
+
+ // Register drag-and-drop event handlers.
+ ["dragenter", "dragover", "dragexit", "drop"].forEach(function (aType) {
+ this._node.addEventListener(aType, this, false);
+ }, this);
+}
+
+Cell.prototype = {
+ /**
+ * The grid.
+ */
+ _grid: null,
+
+ /**
+ * The cell's DOM node.
+ */
+ get node() { return this._node; },
+
+ /**
+ * The cell's offset in the grid.
+ */
+ get index() {
+ let index = this._grid.cells.indexOf(this);
+
+ // Cache this value, overwrite the getter.
+ Object.defineProperty(this, "index", {value: index, enumerable: true});
+
+ return index;
+ },
+
+ /**
+ * The previous cell in the grid.
+ */
+ get previousSibling() {
+ let prev = this.node.previousElementSibling;
+ prev = prev && prev._newtabCell;
+
+ // Cache this value, overwrite the getter.
+ Object.defineProperty(this, "previousSibling", {value: prev, enumerable: true});
+
+ return prev;
+ },
+
+ /**
+ * The next cell in the grid.
+ */
+ get nextSibling() {
+ let next = this.node.nextElementSibling;
+ next = next && next._newtabCell;
+
+ // Cache this value, overwrite the getter.
+ Object.defineProperty(this, "nextSibling", {value: next, enumerable: true});
+
+ return next;
+ },
+
+ /**
+ * The site contained in the cell, if any.
+ */
+ get site() {
+ let firstChild = this.node.firstElementChild;
+ return firstChild && firstChild._newtabSite;
+ },
+
+ /**
+ * Checks whether the cell contains a pinned site.
+ * @return Whether the cell contains a pinned site.
+ */
+ containsPinnedSite: function Cell_containsPinnedSite() {
+ let site = this.site;
+ return site && site.isPinned();
+ },
+
+ /**
+ * Checks whether the cell contains a site (is empty).
+ * @return Whether the cell is empty.
+ */
+ isEmpty: function Cell_isEmpty() {
+ return !this.site;
+ },
+
+ /**
+ * Handles all cell events.
+ */
+ handleEvent: function Cell_handleEvent(aEvent) {
+ // We're not responding to external drag/drop events
+ // when our parent window is in private browsing mode.
+ if (inPrivateBrowsingMode() && !gDrag.draggedSite)
+ return;
+
+ if (aEvent.type != "dragexit" && !gDrag.isValid(aEvent))
+ return;
+
+ switch (aEvent.type) {
+ case "dragenter":
+ aEvent.preventDefault();
+ gDrop.enter(this, aEvent);
+ break;
+ case "dragover":
+ aEvent.preventDefault();
+ break;
+ case "dragexit":
+ gDrop.exit(this, aEvent);
+ break;
+ case "drop":
+ aEvent.preventDefault();
+ gDrop.drop(this, aEvent);
+ break;
+ }
+ }
+};