summaryrefslogtreecommitdiffstats
path: root/webbrowser/components/search/content/engineManager.js
blob: 993d48b06d6dcb4be950941e4e76f3669c0c7522 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
/* 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/. */

Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
                                  "resource://gre/modules/PlacesUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Task",
                                  "resource://gre/modules/Task.jsm");

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 suggestEnabled = Services.prefs.getBoolPref(BROWSER_SUGGEST_PREF);
    document.getElementById("enableSuggest").checked = suggestEnabled;

    var tree = document.getElementById("engineList");
    tree.view = gEngineView;

    Services.obs.addObserver(this, "browser-search-engine-modified", false);
  },

  destroy: function engineManager_destroy() {
    // Remove the observer
    Services.obs.removeObserver(this, "browser-search-engine-modified");
  },

  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();
        gEngineView.invalidate();
        break;
      case "engine-removed":
      case "engine-current":
      case "engine-default":
        // Not relevant
        break;
      }
    }
  },

  onOK: function engineManager_onOK() {
    // Set the preference
    var newSuggestEnabled = document.getElementById("enableSuggest").checked;
    Services.prefs.setBoolPref(BROWSER_SUGGEST_PREF, newSuggestEnabled);

    // Commit the changes
    gEngineView._engineStore.commit();
  },

  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(gEngineView.currentIndex);
    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);
    this.showRestoreDefaults(true);
    document.getElementById("engineList").focus();
  },

  editKeyword: Task.async(function* engineManager_editKeyword() {
    var selectedEngine = gEngineView.selectedEngine;
    if (!selectedEngine)
      return;

    var alias = { value: selectedEngine.alias };
    var strings = document.getElementById("engineManagerBundle");
    var title = strings.getString("editTitle");
    var msg = strings.getFormattedString("editMsg", [selectedEngine.name]);

    while (Services.prompt.prompt(window, title, msg, alias, null, {})) {
      var bduplicate = false;
      var eduplicate = false;
      var dupName = "";

      if (alias.value != "") {
        // Check for duplicates in Places keywords.
        bduplicate = !!(yield PlacesUtils.keywords.fetch(alias.value));

        // Check for duplicates in changes we haven't committed yet
        let engines = gEngineView._engineStore.engines;
        for each (let engine in engines) {
          if (engine.alias == alias.value &&
              engine.name != selectedEngine.name) {
            eduplicate = true;
            dupName = engine.name;
            break;
          }
        }
      }

      // Notify the user if they have chosen an existing engine/bookmark keyword
      if (eduplicate || bduplicate) {
        var dtitle = strings.getString("duplicateTitle");
        var bmsg = strings.getString("duplicateBookmarkMsg");
        var emsg = strings.getFormattedString("duplicateEngineMsg", [dupName]);

        Services.prompt.alert(window, dtitle, eduplicate ? emsg : bmsg);
      } else {
        gEngineView._engineStore.changeEngine(selectedEngine, "alias",
                                              alias.value);
        gEngineView.invalidate();
        break;
      }
    }
  }),

  onSelect: function engineManager_onSelect() {
    // Buttons only work if an engine is selected and it's not the last engine,
    // the latter is true when the selected is first and last at the same time.
    var lastSelected = (gEngineView.selectedIndex == gEngineView.lastIndex);
    var firstSelected = (gEngineView.selectedIndex == 0);
    var noSelection = (gEngineView.selectedIndex == -1);

    document.getElementById("cmd_remove")
            .setAttribute("disabled", noSelection ||
                                      (firstSelected && lastSelected));

    document.getElementById("cmd_moveup")
            .setAttribute("disabled", noSelection || firstSelected);

    document.getElementById("cmd_movedown")
            .setAttribute("disabled", noSelection || lastSelected);

    document.getElementById("cmd_editkeyword")
            .setAttribute("disabled", noSelection);
  }
};

function onDragEngineStart(event) {
  var selectedIndex = gEngineView.selectedIndex;
  if (selectedIndex >= 0) {
    event.dataTransfer.setData(ENGINE_FLAVOR, selectedIndex.toString());
    event.dataTransfer.effectAllowed = "move";
  }
}

// "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() {
    Services.search.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() {
    Services.search.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;
    Services.search.moveEngine(this._engine, this._newIndex);
  }
}

function EngineChangeOp(aEngineClone, aProp, aValue) {
  if (!aEngineClone)
    throw new Error("bad args to new EngineChangeOp!");

  this._engine = aEngineClone.originalEngine;
  this._prop = aProp;
  this._newValue = aValue;
}
EngineChangeOp.prototype = {
  _engine: null,
  _prop: null,
  _newValue: null,
  commit: function ECO_commit() {
    this._engine[this._prop] = this._newValue;
  }
}

function EngineStore() {
  this._engines = Services.search.getVisibleEngines().map(this._cloneEngine);
  this._defaultEngines = Services.search.getDefaultEngines().map(this._cloneEngine);

  this._ops = [];

  // check if we need to disable the restore defaults button
  var someHidden = this._defaultEngines.some(function (e) 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;

    return null;
  },

  _cloneEngine: function ES_cloneEngine(aEngine) {
    var clonedObj={};
    for (var i in aEngine)
      clonedObj[i] = aEngine[i];
    clonedObj.originalEngine = aEngine;
    return clonedObj;
  },

  // 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 currentEngine = this._cloneEngine(Services.search.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)
      Services.search.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;
  },

  changeEngine: function ES_changeEngine(aEngine, aProp, aNewValue) {
    var index = this._getIndexForEngine(aEngine);
    if (index == -1)
      throw new Error("invalid engine?");

    this._engines[index][aProp] = aNewValue;
    this._ops.push(new EngineChangeOp(aEngine, aProp, aNewValue));
  },

  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 (dataTransfer) {
    return parseInt(dataTransfer.getData(ENGINE_FLAVOR));
  },

  // 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;
    else if (column.id == "engineKeyword")
      return this._engineStore.engines[index].alias;
    return "";
  },

  setTree: function(tree) {
    this.tree = tree;
  },

  canDrop: function(targetIndex, orientation, dataTransfer) {
    var sourceIndex = this.getSourceIndexFromDrag(dataTransfer);
    return (sourceIndex != -1 &&
            sourceIndex != targetIndex &&
            sourceIndex != targetIndex + orientation);
  },

  drop: function(dropIndex, orientation, dataTransfer) {
    var sourceIndex = this.getSourceIndexFromDrag(dataTransfer);
    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);
    gEngineManagerDialog.showRestoreDefaults(true);

    // Redraw, and adjust selection
    this.invalidate();
    this.selection.select(dropIndex);
  },

  selection: null,
  getRowProperties: function(index) { return ""; },
  getCellProperties: function(index, column) { return ""; },
  getColumnProperties: function(column) { return ""; },
  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; },
  isSelectable: 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) { }
};