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-rw-r--r--browser/components/newtab/undo.js116
1 files changed, 116 insertions, 0 deletions
diff --git a/browser/components/newtab/undo.js b/browser/components/newtab/undo.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
+
+/**
+ * Dialog allowing to undo the removal of single site or to completely restore
+ * the grid's original state.
+ */
+var gUndoDialog = {
+ /**
+ * The undo dialog's timeout in miliseconds.
+ */
+ HIDE_TIMEOUT_MS: 15000,
+
+ /**
+ * Contains undo information.
+ */
+ _undoData: null,
+
+ /**
+ * Initializes the undo dialog.
+ */
+ init: function() {
+ this._undoContainer = document.getElementById("newtab-undo-container");
+ this._undoContainer.addEventListener("click", this, false);
+ this._undoButton = document.getElementById("newtab-undo-button");
+ this._undoCloseButton = document.getElementById("newtab-undo-close-button");
+ this._undoRestoreButton = document.getElementById("newtab-undo-restore-button");
+ },
+
+ /**
+ * Shows the undo dialog.
+ * @param aSite The site that just got removed.
+ */
+ show: function(aSite) {
+ if (this._undoData)
+ clearTimeout(this._undoData.timeout);
+
+ this._undoData = {
+ index: aSite.cell.index,
+ wasPinned: aSite.isPinned(),
+ blockedLink: aSite.link,
+ timeout: setTimeout(this.hide.bind(this), this.HIDE_TIMEOUT_MS)
+ };
+
+ this._undoContainer.removeAttribute("undo-disabled");
+ this._undoButton.removeAttribute("tabindex");
+ this._undoCloseButton.removeAttribute("tabindex");
+ this._undoRestoreButton.removeAttribute("tabindex");
+ },
+
+ /**
+ * Hides the undo dialog.
+ */
+ hide: function() {
+ if (!this._undoData)
+ return;
+
+ clearTimeout(this._undoData.timeout);
+ this._undoData = null;
+ this._undoContainer.setAttribute("undo-disabled", "true");
+ this._undoButton.setAttribute("tabindex", "-1");
+ this._undoCloseButton.setAttribute("tabindex", "-1");
+ this._undoRestoreButton.setAttribute("tabindex", "-1");
+ },
+
+ /**
+ * The undo dialog event handler.
+ * @param aEvent The event to handle.
+ */
+ handleEvent: function(aEvent) {
+ switch (aEvent.target.id) {
+ case "newtab-undo-button":
+ this._undo();
+ break;
+ case "newtab-undo-restore-button":
+ this._undoAll();
+ break;
+ case "newtab-undo-close-button":
+ this.hide();
+ break;
+ }
+ },
+
+ /**
+ * Undo the last blocked site.
+ */
+ _undo: function() {
+ if (!this._undoData)
+ return;
+
+ let {index, wasPinned, blockedLink} = this._undoData;
+ gBlockedLinks.unblock(blockedLink);
+
+ if (wasPinned) {
+ gPinnedLinks.pin(blockedLink, index);
+ }
+
+ gUpdater.updateGrid();
+ this.hide();
+ },
+
+ /**
+ * Undo all blocked sites.
+ */
+ _undoAll: function() {
+ NewTabUtils.undoAll(function() {
+ gUpdater.updateGrid();
+ this.hide();
+ }.bind(this));
+ }
+};
+
+gUndoDialog.init();