RetroZilla/browser/components/search/content/engineManager.js
2015-10-20 23:03:22 -04:00

490 lines
16 KiB
JavaScript

# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is the Browser Search Service.
#
# The Initial Developer of the Original Code is
# Google Inc.
# Portions created by the Initial Developer are Copyright (C) 2005
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Ben Goodger <beng@google.com> (Original author)
# Gavin Sharp <gavin@gavinsharp.com>
# Pamela Greene <pamg.bugs@gmail.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
const Ci = Components.interfaces;
const Cc = Components.classes;
const ENGINE_FLAVOR = "text/x-moz-search-engine";
const BROWSER_SUGGEST_PREF = "browser.search.suggest.enabled";
var gEngineView = null;
var gEngineManagerDialog = {
init: function engineManager_init() {
gEngineView = new EngineView(new EngineStore());
var prefService = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var suggestEnabled = prefService.getBoolPref(BROWSER_SUGGEST_PREF);
document.getElementById("enableSuggest").checked = suggestEnabled;
var tree = document.getElementById("engineList");
tree.view = gEngineView;
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
os.addObserver(this, "browser-search-engine-modified", false);
},
observe: function engineManager_observe(aEngine, aTopic, aVerb) {
if (aTopic == "browser-search-engine-modified") {
aEngine.QueryInterface(Ci.nsISearchEngine)
switch (aVerb) {
case "engine-added":
gEngineView._engineStore.addEngine(aEngine);
gEngineView.rowCountChanged(gEngineView.lastIndex, 1);
break;
case "engine-changed":
gEngineView._engineStore.reloadIcons();
break;
case "engine-removed":
case "engine-current":
// Not relevant
return;
}
gEngineView.invalidate();
}
},
onOK: function engineManager_onOK() {
// Remove the observer
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
os.removeObserver(this, "browser-search-engine-modified");
// Set the preference
var newSuggestEnabled = document.getElementById("enableSuggest").checked;
var prefService = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
prefService.setBoolPref(BROWSER_SUGGEST_PREF, newSuggestEnabled);
// Commit the changes
gEngineView._engineStore.commit();
},
onCancel: function engineManager_onCancel() {
// Remove the observer
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
os.removeObserver(this, "browser-search-engine-modified");
},
onRestoreDefaults: function engineManager_onRestoreDefaults() {
var num = gEngineView._engineStore.restoreDefaultEngines();
gEngineView.rowCountChanged(0, num);
gEngineView.invalidate();
},
showRestoreDefaults: function engineManager_showRestoreDefaults(val) {
document.documentElement.getButton("extra2").disabled = !val;
},
loadAddEngines: function engineManager_loadAddEngines() {
this.onOK();
window.opener.BrowserSearch.loadAddEngines();
window.close();
},
remove: function engineManager_remove() {
gEngineView._engineStore.removeEngine(gEngineView.selectedEngine);
var index = gEngineView.selectedIndex;
gEngineView.rowCountChanged(index, -1);
gEngineView.invalidate();
gEngineView.selection.select(Math.min(index, gEngineView.lastIndex));
gEngineView.ensureRowIsVisible(Math.min(index, gEngineView.lastIndex));
document.getElementById("engineList").focus();
},
/**
* Moves the selected engine either up or down in the engine list
* @param aDir
* -1 to move the selected engine down, +1 to move it up.
*/
bump: function engineManager_move(aDir) {
var selectedEngine = gEngineView.selectedEngine;
var newIndex = gEngineView.selectedIndex - aDir;
gEngineView._engineStore.moveEngine(selectedEngine, newIndex);
gEngineView.invalidate();
gEngineView.selection.select(newIndex);
gEngineView.ensureRowIsVisible(newIndex);
document.getElementById("engineList").focus();
},
onSelect: function engineManager_onSelect() {
// buttons only work if an engine is selected and it's not the last engine
var disableButtons = (gEngineView.selectedIndex == -1) ||
(gEngineView.lastIndex == 0);
var lastSelected = (gEngineView.selectedIndex == gEngineView.lastIndex);
var firstSelected = (gEngineView.selectedIndex == 0);
document.getElementById("cmd_remove").setAttribute("disabled",
disableButtons);
document.getElementById("cmd_moveup").setAttribute("disabled",
disableButtons || firstSelected);
document.getElementById("cmd_movedown").setAttribute("disabled",
disableButtons || lastSelected);
}
};
var gDragObserver = {
onDragStart: function (aEvent, aXferData, aDragAction) {
var selectedIndex = gEngineView.selectedIndex;
if (selectedIndex == -1)
return;
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour(ENGINE_FLAVOR, selectedIndex.toString());
aDragAction.action = Ci.nsIDragService.DRAGDROP_ACTION_MOVE;
},
onDrop: function (aEvent, aXferData, aDragSession) { },
onDragExit: function (aEvent, aDragSession) { },
onDragOver: function (aEvent, aFlavour, aDragSession) { },
getSupportedFlavours: function() { return null; }
};
// "Operation" objects
function EngineMoveOp(aEngineClone, aNewIndex) {
if (!aEngineClone)
throw new Error("bad args to new EngineMoveOp!");
this._engine = aEngineClone.originalEngine;
this._newIndex = aNewIndex;
}
EngineMoveOp.prototype = {
_engine: null,
_newIndex: null,
commit: function EMO_commit() {
var searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
searchService.moveEngine(this._engine, this._newIndex);
}
}
function EngineRemoveOp(aEngineClone) {
if (!aEngineClone)
throw new Error("bad args to new EngineRemoveOp!");
this._engine = aEngineClone.originalEngine;
}
EngineRemoveOp.prototype = {
_engine: null,
commit: function ERO_commit() {
var searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
searchService.removeEngine(this._engine);
}
}
function EngineUnhideOp(aEngineClone, aNewIndex) {
if (!aEngineClone)
throw new Error("bad args to new EngineUnhideOp!");
this._engine = aEngineClone.originalEngine;
this._newIndex = aNewIndex;
}
EngineUnhideOp.prototype = {
_engine: null,
_newIndex: null,
commit: function EUO_commit() {
this._engine.hidden = false;
var searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
searchService.moveEngine(this._engine, this._newIndex);
}
}
function EngineStore() {
var searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
this._engines = searchService.getVisibleEngines({}).map(this._cloneEngine);
this._defaultEngines = searchService.getDefaultEngines({}).map(this._cloneEngine);
this._ops = [];
// check if we need to disable the restore defaults button
var someHidden = this._defaultEngines.some(function (e) {return e.hidden;});
gEngineManagerDialog.showRestoreDefaults(someHidden);
}
EngineStore.prototype = {
_engines: null,
_defaultEngines: null,
_ops: null,
get engines() {
return this._engines;
},
set engines(val) {
this._engines = val;
return val;
},
_getIndexForEngine: function ES_getIndexForEngine(aEngine) {
return this._engines.indexOf(aEngine);
},
_getEngineByName: function ES_getEngineByName(aName) {
for each (var engine in this._engines)
if (engine.name == aName)
return engine;
},
_cloneEngine: function ES_cloneObj(aEngine) {
var newO=[];
for (var i in aEngine)
newO[i] = aEngine[i];
newO.originalEngine = aEngine;
return newO;
},
// Callback for Array's some(). A thisObj must be passed to some()
_isSameEngine: function ES_isSameEngine(aEngineClone) {
return aEngineClone.originalEngine == this.originalEngine;
},
commit: function ES_commit() {
var searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
var currentEngine = this._cloneEngine(searchService.currentEngine);
for (var i = 0; i < this._ops.length; i++)
this._ops[i].commit();
// Restore currentEngine if it is a default engine that is still visible.
// Needed if the user deletes currentEngine and then restores it.
if (this._defaultEngines.some(this._isSameEngine, currentEngine) &&
!currentEngine.originalEngine.hidden)
searchService.currentEngine = currentEngine.originalEngine;
},
addEngine: function ES_addEngine(aEngine) {
this._engines.push(this._cloneEngine(aEngine));
},
moveEngine: function ES_moveEngine(aEngine, aNewIndex) {
if (aNewIndex < 0 || aNewIndex > this._engines.length - 1)
throw new Error("ES_moveEngine: invalid aNewIndex!");
var index = this._getIndexForEngine(aEngine);
if (index == -1)
throw new Error("ES_moveEngine: invalid engine?");
if (index == aNewIndex)
return; // nothing to do
// Move the engine in our internal store
var removedEngine = this._engines.splice(index, 1)[0];
this._engines.splice(aNewIndex, 0, removedEngine);
this._ops.push(new EngineMoveOp(aEngine, aNewIndex));
},
removeEngine: function ES_removeEngine(aEngine) {
var index = this._getIndexForEngine(aEngine);
if (index == -1)
throw new Error("invalid engine?");
this._engines.splice(index, 1);
this._ops.push(new EngineRemoveOp(aEngine));
if (this._defaultEngines.some(this._isSameEngine, aEngine))
gEngineManagerDialog.showRestoreDefaults(true);
},
restoreDefaultEngines: function ES_restoreDefaultEngines() {
var added = 0;
for (var i = 0; i < this._defaultEngines.length; ++i) {
var e = this._defaultEngines[i];
// If the engine is already in the list, just move it.
if (this._engines.some(this._isSameEngine, e)) {
this.moveEngine(this._getEngineByName(e.name), i);
} else {
// Otherwise, add it back to our internal store
this._engines.splice(i, 0, e);
this._ops.push(new EngineUnhideOp(e, i));
added++;
}
}
gEngineManagerDialog.showRestoreDefaults(false);
return added;
},
reloadIcons: function ES_reloadIcons() {
this._engines.forEach(function (e) {
e.uri = e.originalEngine.uri;
});
}
}
function EngineView(aEngineStore) {
this._engineStore = aEngineStore;
}
EngineView.prototype = {
_engineStore: null,
tree: null,
get lastIndex() {
return this.rowCount - 1;
},
get selectedIndex() {
var seln = this.selection;
if (seln.getRangeCount() > 0) {
var min = { };
seln.getRangeAt(0, min, { });
return min.value;
}
return -1;
},
get selectedEngine() {
return this._engineStore.engines[this.selectedIndex];
},
// Helpers
rowCountChanged: function (index, count) {
this.tree.rowCountChanged(index, count);
},
invalidate: function () {
this.tree.invalidate();
},
ensureRowIsVisible: function (index) {
this.tree.ensureRowIsVisible(index);
},
getSourceIndexFromDrag: function () {
var dragService = Cc["@mozilla.org/widget/dragservice;1"].
getService().QueryInterface(Ci.nsIDragService);
var dragSession = dragService.getCurrentSession();
var transfer = Cc["@mozilla.org/widget/transferable;1"].
createInstance(Ci.nsITransferable);
transfer.addDataFlavor(ENGINE_FLAVOR);
dragSession.getData(transfer, 0);
var dataObj = {};
var len = {};
var sourceIndex = -1;
try {
transfer.getAnyTransferData({}, dataObj, len);
} catch (ex) {}
if (dataObj.value) {
sourceIndex = dataObj.value.QueryInterface(Ci.nsISupportsString).data;
sourceIndex = parseInt(sourceIndex.substring(0, len.value));
}
return sourceIndex;
},
// nsITreeView
get rowCount() {
return this._engineStore.engines.length;
},
getImageSrc: function(index, column) {
if (column.id == "engineName" && this._engineStore.engines[index].iconURI)
return this._engineStore.engines[index].iconURI.spec;
return "";
},
getCellText: function(index, column) {
if (column.id == "engineName")
return this._engineStore.engines[index].name;
return "";
},
setTree: function(tree) {
this.tree = tree;
},
canDrop: function(targetIndex, orientation) {
var sourceIndex = this.getSourceIndexFromDrag();
return (sourceIndex != -1 &&
sourceIndex != targetIndex &&
sourceIndex != (targetIndex + orientation));
},
drop: function(dropIndex, orientation) {
var sourceIndex = this.getSourceIndexFromDrag();
var sourceEngine = this._engineStore.engines[sourceIndex];
if (dropIndex > sourceIndex) {
if (orientation == Ci.nsITreeView.DROP_BEFORE)
dropIndex--;
} else {
if (orientation == Ci.nsITreeView.DROP_AFTER)
dropIndex++;
}
this._engineStore.moveEngine(sourceEngine, dropIndex);
// Redraw, and adjust selection
this.invalidate();
this.selection.clearSelection();
this.selection.select(dropIndex);
},
selection: null,
getRowProperties: function(index, properties) { },
getCellProperties: function(index, column, properties) { },
getColumnProperties: function(column, properties) { },
isContainer: function(index) { return false; },
isContainerOpen: function(index) { return false; },
isContainerEmpty: function(index) { return false; },
isSeparator: function(index) { return false; },
isSorted: function(index) { return false; },
getParentIndex: function(index) { return -1; },
hasNextSibling: function(parentIndex, index) { return false; },
getLevel: function(index) { return 0; },
getProgressMode: function(index, column) { },
getCellValue: function(index, column) { },
toggleOpenState: function(index) { },
cycleHeader: function(column) { },
selectionChanged: function() { },
cycleCell: function(row, column) { },
isEditable: function(index, column) { return false; },
setCellValue: function(index, column, value) { },
setCellText: function(index, column, value) { },
performAction: function(action) { },
performActionOnRow: function(action, index) { },
performActionOnCell: function(action, index, column) { }
};