1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/browser/components/sessionstore/content/aboutSessionRestore.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,310 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +const Cc = Components.classes;
1.9 +const Ci = Components.interfaces;
1.10 +const Cu = Components.utils;
1.11 +
1.12 +var gStateObject;
1.13 +var gTreeData;
1.14 +
1.15 +// Page initialization
1.16 +
1.17 +window.onload = function() {
1.18 + // the crashed session state is kept inside a textbox so that SessionStore picks it up
1.19 + // (for when the tab is closed or the session crashes right again)
1.20 + var sessionData = document.getElementById("sessionData");
1.21 + if (!sessionData.value) {
1.22 + document.getElementById("errorTryAgain").disabled = true;
1.23 + return;
1.24 + }
1.25 +
1.26 + // remove unneeded braces (added for compatibility with Firefox 2.0 and 3.0)
1.27 + if (sessionData.value.charAt(0) == '(')
1.28 + sessionData.value = sessionData.value.slice(1, -1);
1.29 + try {
1.30 + gStateObject = JSON.parse(sessionData.value);
1.31 + }
1.32 + catch (exJSON) {
1.33 + var s = new Cu.Sandbox("about:blank", {sandboxName: 'aboutSessionRestore'});
1.34 + gStateObject = Cu.evalInSandbox("(" + sessionData.value + ")", s);
1.35 + // If we couldn't parse the string with JSON.parse originally, make sure
1.36 + // that the value in the textbox will be parsable.
1.37 + sessionData.value = JSON.stringify(gStateObject);
1.38 + }
1.39 +
1.40 + // make sure the data is tracked to be restored in case of a subsequent crash
1.41 + var event = document.createEvent("UIEvents");
1.42 + event.initUIEvent("input", true, true, window, 0);
1.43 + sessionData.dispatchEvent(event);
1.44 +
1.45 + initTreeView();
1.46 +
1.47 + document.getElementById("errorTryAgain").focus();
1.48 +};
1.49 +
1.50 +function initTreeView() {
1.51 + var tabList = document.getElementById("tabList");
1.52 + var winLabel = tabList.getAttribute("_window_label");
1.53 +
1.54 + gTreeData = [];
1.55 + gStateObject.windows.forEach(function(aWinData, aIx) {
1.56 + var winState = {
1.57 + label: winLabel.replace("%S", (aIx + 1)),
1.58 + open: true,
1.59 + checked: true,
1.60 + ix: aIx
1.61 + };
1.62 + winState.tabs = aWinData.tabs.map(function(aTabData) {
1.63 + var entry = aTabData.entries[aTabData.index - 1] || { url: "about:blank" };
1.64 + var iconURL = aTabData.attributes && aTabData.attributes.image || null;
1.65 + // don't initiate a connection just to fetch a favicon (see bug 462863)
1.66 + if (/^https?:/.test(iconURL))
1.67 + iconURL = "moz-anno:favicon:" + iconURL;
1.68 + return {
1.69 + label: entry.title || entry.url,
1.70 + checked: true,
1.71 + src: iconURL,
1.72 + parent: winState
1.73 + };
1.74 + });
1.75 + gTreeData.push(winState);
1.76 + for each (var tab in winState.tabs)
1.77 + gTreeData.push(tab);
1.78 + }, this);
1.79 +
1.80 + tabList.view = treeView;
1.81 + tabList.view.selection.select(0);
1.82 +}
1.83 +
1.84 +// User actions
1.85 +
1.86 +function restoreSession() {
1.87 + document.getElementById("errorTryAgain").disabled = true;
1.88 +
1.89 + // remove all unselected tabs from the state before restoring it
1.90 + var ix = gStateObject.windows.length - 1;
1.91 + for (var t = gTreeData.length - 1; t >= 0; t--) {
1.92 + if (treeView.isContainer(t)) {
1.93 + if (gTreeData[t].checked === 0)
1.94 + // this window will be restored partially
1.95 + gStateObject.windows[ix].tabs =
1.96 + gStateObject.windows[ix].tabs.filter(function(aTabData, aIx)
1.97 + gTreeData[t].tabs[aIx].checked);
1.98 + else if (!gTreeData[t].checked)
1.99 + // this window won't be restored at all
1.100 + gStateObject.windows.splice(ix, 1);
1.101 + ix--;
1.102 + }
1.103 + }
1.104 + var stateString = JSON.stringify(gStateObject);
1.105 +
1.106 + var ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
1.107 + var top = getBrowserWindow();
1.108 +
1.109 + // if there's only this page open, reuse the window for restoring the session
1.110 + if (top.gBrowser.tabs.length == 1) {
1.111 + ss.setWindowState(top, stateString, true);
1.112 + return;
1.113 + }
1.114 +
1.115 + // restore the session into a new window and close the current tab
1.116 + var newWindow = top.openDialog(top.location, "_blank", "chrome,dialog=no,all");
1.117 + newWindow.addEventListener("load", function() {
1.118 + newWindow.removeEventListener("load", arguments.callee, true);
1.119 + ss.setWindowState(newWindow, stateString, true);
1.120 +
1.121 + var tabbrowser = top.gBrowser;
1.122 + var tabIndex = tabbrowser.getBrowserIndexForDocument(document);
1.123 + tabbrowser.removeTab(tabbrowser.tabs[tabIndex]);
1.124 + }, true);
1.125 +}
1.126 +
1.127 +function startNewSession() {
1.128 + var prefBranch = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
1.129 + if (prefBranch.getIntPref("browser.startup.page") == 0)
1.130 + getBrowserWindow().gBrowser.loadURI("about:blank");
1.131 + else
1.132 + getBrowserWindow().BrowserHome();
1.133 +}
1.134 +
1.135 +function onListClick(aEvent) {
1.136 + // don't react to right-clicks
1.137 + if (aEvent.button == 2)
1.138 + return;
1.139 +
1.140 + var row = {}, col = {};
1.141 + treeView.treeBox.getCellAt(aEvent.clientX, aEvent.clientY, row, col, {});
1.142 + if (col.value) {
1.143 + // Restore this specific tab in the same window for middle/double/accel clicking
1.144 + // on a tab's title.
1.145 +#ifdef XP_MACOSX
1.146 + let accelKey = aEvent.metaKey;
1.147 +#else
1.148 + let accelKey = aEvent.ctrlKey;
1.149 +#endif
1.150 + if ((aEvent.button == 1 || aEvent.button == 0 && aEvent.detail == 2 || accelKey) &&
1.151 + col.value.id == "title" &&
1.152 + !treeView.isContainer(row.value)) {
1.153 + restoreSingleTab(row.value, aEvent.shiftKey);
1.154 + aEvent.stopPropagation();
1.155 + }
1.156 + else if (col.value.id == "restore")
1.157 + toggleRowChecked(row.value);
1.158 + }
1.159 +}
1.160 +
1.161 +function onListKeyDown(aEvent) {
1.162 + switch (aEvent.keyCode)
1.163 + {
1.164 + case KeyEvent.DOM_VK_SPACE:
1.165 + toggleRowChecked(document.getElementById("tabList").currentIndex);
1.166 + break;
1.167 + case KeyEvent.DOM_VK_RETURN:
1.168 + var ix = document.getElementById("tabList").currentIndex;
1.169 + if (aEvent.ctrlKey && !treeView.isContainer(ix))
1.170 + restoreSingleTab(ix, aEvent.shiftKey);
1.171 + break;
1.172 + }
1.173 +}
1.174 +
1.175 +// Helper functions
1.176 +
1.177 +function getBrowserWindow() {
1.178 + return window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation)
1.179 + .QueryInterface(Ci.nsIDocShellTreeItem).rootTreeItem
1.180 + .QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindow);
1.181 +}
1.182 +
1.183 +function toggleRowChecked(aIx) {
1.184 + var item = gTreeData[aIx];
1.185 + item.checked = !item.checked;
1.186 + treeView.treeBox.invalidateRow(aIx);
1.187 +
1.188 + function isChecked(aItem) aItem.checked;
1.189 +
1.190 + if (treeView.isContainer(aIx)) {
1.191 + // (un)check all tabs of this window as well
1.192 + for each (var tab in item.tabs) {
1.193 + tab.checked = item.checked;
1.194 + treeView.treeBox.invalidateRow(gTreeData.indexOf(tab));
1.195 + }
1.196 + }
1.197 + else {
1.198 + // update the window's checkmark as well (0 means "partially checked")
1.199 + item.parent.checked = item.parent.tabs.every(isChecked) ? true :
1.200 + item.parent.tabs.some(isChecked) ? 0 : false;
1.201 + treeView.treeBox.invalidateRow(gTreeData.indexOf(item.parent));
1.202 + }
1.203 +
1.204 + document.getElementById("errorTryAgain").disabled = !gTreeData.some(isChecked);
1.205 +}
1.206 +
1.207 +function restoreSingleTab(aIx, aShifted) {
1.208 + var tabbrowser = getBrowserWindow().gBrowser;
1.209 + var newTab = tabbrowser.addTab();
1.210 + var item = gTreeData[aIx];
1.211 +
1.212 + var ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
1.213 + var tabState = gStateObject.windows[item.parent.ix]
1.214 + .tabs[aIx - gTreeData.indexOf(item.parent) - 1];
1.215 + // ensure tab would be visible on the tabstrip.
1.216 + tabState.hidden = false;
1.217 + ss.setTabState(newTab, JSON.stringify(tabState));
1.218 +
1.219 + // respect the preference as to whether to select the tab (the Shift key inverses)
1.220 + var prefBranch = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
1.221 + if (prefBranch.getBoolPref("browser.tabs.loadInBackground") != !aShifted)
1.222 + tabbrowser.selectedTab = newTab;
1.223 +}
1.224 +
1.225 +// Tree controller
1.226 +
1.227 +var treeView = {
1.228 + treeBox: null,
1.229 + selection: null,
1.230 +
1.231 + get rowCount() { return gTreeData.length; },
1.232 + setTree: function(treeBox) { this.treeBox = treeBox; },
1.233 + getCellText: function(idx, column) { return gTreeData[idx].label; },
1.234 + isContainer: function(idx) { return "open" in gTreeData[idx]; },
1.235 + getCellValue: function(idx, column){ return gTreeData[idx].checked; },
1.236 + isContainerOpen: function(idx) { return gTreeData[idx].open; },
1.237 + isContainerEmpty: function(idx) { return false; },
1.238 + isSeparator: function(idx) { return false; },
1.239 + isSorted: function() { return false; },
1.240 + isEditable: function(idx, column) { return false; },
1.241 + canDrop: function(idx, orientation, dt) { return false; },
1.242 + getLevel: function(idx) { return this.isContainer(idx) ? 0 : 1; },
1.243 +
1.244 + getParentIndex: function(idx) {
1.245 + if (!this.isContainer(idx))
1.246 + for (var t = idx - 1; t >= 0 ; t--)
1.247 + if (this.isContainer(t))
1.248 + return t;
1.249 + return -1;
1.250 + },
1.251 +
1.252 + hasNextSibling: function(idx, after) {
1.253 + var thisLevel = this.getLevel(idx);
1.254 + for (var t = after + 1; t < gTreeData.length; t++)
1.255 + if (this.getLevel(t) <= thisLevel)
1.256 + return this.getLevel(t) == thisLevel;
1.257 + return false;
1.258 + },
1.259 +
1.260 + toggleOpenState: function(idx) {
1.261 + if (!this.isContainer(idx))
1.262 + return;
1.263 + var item = gTreeData[idx];
1.264 + if (item.open) {
1.265 + // remove this window's tab rows from the view
1.266 + var thisLevel = this.getLevel(idx);
1.267 + for (var t = idx + 1; t < gTreeData.length && this.getLevel(t) > thisLevel; t++);
1.268 + var deletecount = t - idx - 1;
1.269 + gTreeData.splice(idx + 1, deletecount);
1.270 + this.treeBox.rowCountChanged(idx + 1, -deletecount);
1.271 + }
1.272 + else {
1.273 + // add this window's tab rows to the view
1.274 + var toinsert = gTreeData[idx].tabs;
1.275 + for (var i = 0; i < toinsert.length; i++)
1.276 + gTreeData.splice(idx + i + 1, 0, toinsert[i]);
1.277 + this.treeBox.rowCountChanged(idx + 1, toinsert.length);
1.278 + }
1.279 + item.open = !item.open;
1.280 + this.treeBox.invalidateRow(idx);
1.281 + },
1.282 +
1.283 + getCellProperties: function(idx, column) {
1.284 + if (column.id == "restore" && this.isContainer(idx) && gTreeData[idx].checked === 0)
1.285 + return "partial";
1.286 + if (column.id == "title")
1.287 + return this.getImageSrc(idx, column) ? "icon" : "noicon";
1.288 +
1.289 + return "";
1.290 + },
1.291 +
1.292 + getRowProperties: function(idx) {
1.293 + var winState = gTreeData[idx].parent || gTreeData[idx];
1.294 + if (winState.ix % 2 != 0)
1.295 + return "alternate";
1.296 +
1.297 + return "";
1.298 + },
1.299 +
1.300 + getImageSrc: function(idx, column) {
1.301 + if (column.id == "title")
1.302 + return gTreeData[idx].src || null;
1.303 + return null;
1.304 + },
1.305 +
1.306 + getProgressMode : function(idx, column) { },
1.307 + cycleHeader: function(column) { },
1.308 + cycleCell: function(idx, column) { },
1.309 + selectionChanged: function() { },
1.310 + performAction: function(action) { },
1.311 + performActionOnCell: function(action, index, column) { },
1.312 + getColumnProperties: function(column) { return ""; }
1.313 +};
