michael@0: // -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0: 
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: Components.utils.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: const nsIPrefLocalizedString = Components.interfaces.nsIPrefLocalizedString;
michael@0: const nsISupportsString = Components.interfaces.nsISupportsString;
michael@0: const nsIPrefBranch = Components.interfaces.nsIPrefBranch;
michael@0: const nsIClipboardHelper = Components.interfaces.nsIClipboardHelper;
michael@0: const nsIAtomService = Components.interfaces.nsIAtomService;
michael@0: 
michael@0: const nsSupportsString_CONTRACTID = "@mozilla.org/supports-string;1";
michael@0: const nsPrompt_CONTRACTID = "@mozilla.org/embedcomp/prompt-service;1";
michael@0: const nsPrefService_CONTRACTID = "@mozilla.org/preferences-service;1";
michael@0: const nsClipboardHelper_CONTRACTID = "@mozilla.org/widget/clipboardhelper;1";
michael@0: const nsAtomService_CONTRACTID = "@mozilla.org/atom-service;1";
michael@0: 
michael@0: const gPrefBranch = Services.prefs;
michael@0: const gClipboardHelper = Components.classes[nsClipboardHelper_CONTRACTID].getService(nsIClipboardHelper);
michael@0: const gAtomService = Components.classes[nsAtomService_CONTRACTID].getService(nsIAtomService);
michael@0: 
michael@0: var gLockProps = ["default", "user", "locked"];
michael@0: // we get these from a string bundle
michael@0: var gLockStrs = [];
michael@0: var gTypeStrs = [];
michael@0: 
michael@0: const PREF_IS_DEFAULT_VALUE = 0;
michael@0: const PREF_IS_USER_SET = 1;
michael@0: const PREF_IS_LOCKED = 2;
michael@0: 
michael@0: var gPrefHash = {};
michael@0: var gPrefArray = [];
michael@0: var gPrefView = gPrefArray; // share the JS array
michael@0: var gSortedColumn = "prefCol";
michael@0: var gSortFunction = null;
michael@0: var gSortDirection = 1; // 1 is ascending; -1 is descending
michael@0: var gConfigBundle = null;
michael@0: var gFilter = null;
michael@0: 
michael@0: var view = {
michael@0:   get rowCount() { return gPrefView.length; },
michael@0:   getCellText : function(index, col) {
michael@0:     if (!(index in gPrefView))
michael@0:       return "";
michael@0:     
michael@0:     var value = gPrefView[index][col.id];
michael@0: 
michael@0:     switch (col.id) {
michael@0:       case "lockCol":           
michael@0:         return gLockStrs[value];
michael@0:       case "typeCol":
michael@0:         return gTypeStrs[value];
michael@0:       default:
michael@0:         return value;
michael@0:     }
michael@0:   },
michael@0:   getRowProperties : function(index) { return ""; },
michael@0:   getCellProperties : function(index, col) {
michael@0:     if (index in gPrefView)
michael@0:       return gLockProps[gPrefView[index].lockCol];
michael@0: 
michael@0:     return "";
michael@0:   },
michael@0:   getColumnProperties : function(col) { return ""; },
michael@0:   treebox : null,
michael@0:   selection : null,
michael@0:   isContainer : function(index) { return false; },
michael@0:   isContainerOpen : function(index) { return false; },
michael@0:   isContainerEmpty : function(index) { return false; },
michael@0:   isSorted : function() { return true; },
michael@0:   canDrop : function(index, orientation) { return false; },
michael@0:   drop : function(row, orientation) {},
michael@0:   setTree : function(out) { this.treebox = out; },
michael@0:   getParentIndex: function(rowIndex) { return -1; },
michael@0:   hasNextSibling: function(rowIndex, afterIndex) { return false; },
michael@0:   getLevel: function(index) { return 1; },
michael@0:   getImageSrc: function(row, col) { return ""; },
michael@0:   toggleOpenState : function(index) {},
michael@0:   cycleHeader: function(col) {
michael@0:     var index = this.selection.currentIndex;
michael@0:     if (col.id == gSortedColumn) {
michael@0:       gSortDirection = -gSortDirection;
michael@0:       gPrefArray.reverse();
michael@0:       if (gPrefView != gPrefArray)
michael@0:         gPrefView.reverse();
michael@0:       if (index >= 0)
michael@0:         index = gPrefView.length - index - 1;
michael@0:     }
michael@0:     else {
michael@0:       var pref = null;
michael@0:       if (index >= 0)
michael@0:         pref = gPrefView[index];
michael@0: 
michael@0:       var old = document.getElementById(gSortedColumn);
michael@0:       old.setAttribute("sortDirection", "");
michael@0:       gPrefArray.sort(gSortFunction = gSortFunctions[col.id]);
michael@0:       if (gPrefView != gPrefArray)
michael@0:         gPrefView.sort(gSortFunction);
michael@0:       gSortedColumn = col.id;
michael@0:       if (pref)
michael@0:         index = getViewIndexOfPref(pref);
michael@0:     }
michael@0:     col.element.setAttribute("sortDirection", gSortDirection > 0 ? "ascending" : "descending");
michael@0:     this.treebox.invalidate();
michael@0:     if (index >= 0) {
michael@0:       this.selection.select(index);
michael@0:       this.treebox.ensureRowIsVisible(index);
michael@0:     }
michael@0:   },
michael@0:   selectionChanged : function() {},
michael@0:   cycleCell: function(row, col) {},
michael@0:   isEditable: function(row, col) {return false; },
michael@0:   isSelectable: function(row, col) {return false; },
michael@0:   setCellValue: function(row, col, value) {},
michael@0:   setCellText: function(row, col, value) {},
michael@0:   performAction: function(action) {},
michael@0:   performActionOnRow: function(action, row) {},
michael@0:   performActionOnCell: function(action, row, col) {},
michael@0:   isSeparator: function(index) {return false; }
michael@0: };
michael@0: 
michael@0: // find the index in gPrefView of a pref object
michael@0: // or -1 if it does not exist in the filtered view
michael@0: function getViewIndexOfPref(pref)
michael@0: {
michael@0:   var low = -1, high = gPrefView.length;
michael@0:   var index = (low + high) >> 1;
michael@0:   while (index > low) {
michael@0:     var mid = gPrefView[index];
michael@0:     if (mid == pref)
michael@0:       return index;
michael@0:     if (gSortFunction(mid, pref) < 0)
michael@0:       low = index;
michael@0:     else
michael@0:       high = index;
michael@0:     index = (low + high) >> 1;
michael@0:   }
michael@0:   return -1;
michael@0: }
michael@0: 
michael@0: // find the index in gPrefView where a pref object belongs
michael@0: function getNearestViewIndexOfPref(pref)
michael@0: {
michael@0:   var low = -1, high = gPrefView.length;
michael@0:   var index = (low + high) >> 1;
michael@0:   while (index > low) {
michael@0:     if (gSortFunction(gPrefView[index], pref) < 0)
michael@0:       low = index;
michael@0:     else
michael@0:       high = index;
michael@0:     index = (low + high) >> 1;
michael@0:   }
michael@0:   return high;
michael@0: }
michael@0: 
michael@0: // find the index in gPrefArray of a pref object
michael@0: function getIndexOfPref(pref)
michael@0: {
michael@0:   var low = -1, high = gPrefArray.length;
michael@0:   var index = (low + high) >> 1;
michael@0:   while (index > low) {
michael@0:     var mid = gPrefArray[index];
michael@0:     if (mid == pref)
michael@0:       return index;
michael@0:     if (gSortFunction(mid, pref) < 0)
michael@0:       low = index;
michael@0:     else
michael@0:       high = index;
michael@0:     index = (low + high) >> 1;
michael@0:   }
michael@0:   return index;
michael@0: }
michael@0: 
michael@0: function getNearestIndexOfPref(pref)
michael@0: {
michael@0:   var low = -1, high = gPrefArray.length;
michael@0:   var index = (low + high) >> 1;
michael@0:   while (index > low) {
michael@0:     if (gSortFunction(gPrefArray[index], pref) < 0)
michael@0:       low = index;
michael@0:     else
michael@0:       high = index;
michael@0:     index = (low + high) >> 1;
michael@0:   }
michael@0:   return high;
michael@0: }
michael@0: 
michael@0: var gPrefListener =
michael@0: {
michael@0:   observe: function(subject, topic, prefName)
michael@0:   {
michael@0:     if (topic != "nsPref:changed")
michael@0:       return;
michael@0: 
michael@0:     var arrayIndex = gPrefArray.length;
michael@0:     var viewIndex = arrayIndex;
michael@0:     var selectedIndex = view.selection.currentIndex;
michael@0:     var pref;
michael@0:     var updateView = false;
michael@0:     var updateArray = false;
michael@0:     var addedRow = false;
michael@0:     if (prefName in gPrefHash) {
michael@0:       pref = gPrefHash[prefName];
michael@0:       viewIndex = getViewIndexOfPref(pref);
michael@0:       arrayIndex = getIndexOfPref(pref);
michael@0:       fetchPref(prefName, arrayIndex);
michael@0:       // fetchPref replaces the existing pref object
michael@0:       pref = gPrefHash[prefName];
michael@0:       if (viewIndex >= 0) {
michael@0:         // Might need to update the filtered view
michael@0:         gPrefView[viewIndex] = gPrefHash[prefName];
michael@0:         view.treebox.invalidateRow(viewIndex);
michael@0:       }
michael@0:       if (gSortedColumn == "lockCol" || gSortedColumn == "valueCol") {
michael@0:         updateArray = true;
michael@0:         gPrefArray.splice(arrayIndex, 1);
michael@0:         if (gFilter && gFilter.test(pref.prefCol + ";" + pref.valueCol)) {
michael@0:           updateView = true;
michael@0:           gPrefView.splice(viewIndex, 1);
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:     else {
michael@0:       fetchPref(prefName, arrayIndex);
michael@0:       pref = gPrefArray.pop();
michael@0:       updateArray = true;
michael@0:       addedRow = true;
michael@0:       if (gFilter && gFilter.test(pref.prefCol + ";" + pref.valueCol)) {
michael@0:         updateView = true;
michael@0:       }
michael@0:     }
michael@0:     if (updateArray) {
michael@0:       // Reinsert in the data array
michael@0:       var newIndex = getNearestIndexOfPref(pref);
michael@0:       gPrefArray.splice(newIndex, 0, pref);
michael@0: 
michael@0:       if (updateView) {
michael@0:         // View is filtered, reinsert in the view separately
michael@0:         newIndex = getNearestViewIndexOfPref(pref);
michael@0:         gPrefView.splice(newIndex, 0, pref);
michael@0:       }
michael@0:       else if (gFilter) {
michael@0:         // View is filtered, but nothing to update
michael@0:         return;
michael@0:       }
michael@0: 
michael@0:       if (addedRow)
michael@0:         view.treebox.rowCountChanged(newIndex, 1);
michael@0: 
michael@0:       // Invalidate the changed range in the view
michael@0:       var low = Math.min(viewIndex, newIndex);
michael@0:       var high = Math.max(viewIndex, newIndex);
michael@0:       view.treebox.invalidateRange(low, high);
michael@0: 
michael@0:       if (selectedIndex == viewIndex) {
michael@0:         selectedIndex = newIndex;
michael@0:       }
michael@0:       else if (selectedIndex >= low && selectedIndex <= high) {
michael@0:         selectedIndex += (newIndex > viewIndex) ? -1 : 1;
michael@0:       }
michael@0:       if (selectedIndex >= 0) {
michael@0:         view.selection.select(selectedIndex);
michael@0:         if (selectedIndex == newIndex)
michael@0:           view.treebox.ensureRowIsVisible(selectedIndex);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: };
michael@0: 
michael@0: function prefObject(prefName, prefIndex)
michael@0: {
michael@0:   this.prefCol = prefName;
michael@0: }
michael@0: 
michael@0: prefObject.prototype =
michael@0: {
michael@0:   lockCol: PREF_IS_DEFAULT_VALUE,
michael@0:   typeCol: nsIPrefBranch.PREF_STRING,
michael@0:   valueCol: ""
michael@0: };
michael@0: 
michael@0: function fetchPref(prefName, prefIndex)
michael@0: {
michael@0:   var pref = new prefObject(prefName);
michael@0: 
michael@0:   gPrefHash[prefName] = pref;
michael@0:   gPrefArray[prefIndex] = pref;
michael@0: 
michael@0:   if (gPrefBranch.prefIsLocked(prefName))
michael@0:     pref.lockCol = PREF_IS_LOCKED;
michael@0:   else if (gPrefBranch.prefHasUserValue(prefName))
michael@0:     pref.lockCol = PREF_IS_USER_SET;
michael@0: 
michael@0:   try {
michael@0:     switch (gPrefBranch.getPrefType(prefName)) {
michael@0:       case gPrefBranch.PREF_BOOL:
michael@0:         pref.typeCol = gPrefBranch.PREF_BOOL;
michael@0:         // convert to a string
michael@0:         pref.valueCol = gPrefBranch.getBoolPref(prefName).toString();
michael@0:         break;
michael@0:       case gPrefBranch.PREF_INT:
michael@0:         pref.typeCol = gPrefBranch.PREF_INT;
michael@0:         // convert to a string
michael@0:         pref.valueCol = gPrefBranch.getIntPref(prefName).toString();
michael@0:         break;
michael@0:       default:
michael@0:       case gPrefBranch.PREF_STRING:
michael@0:         pref.valueCol = gPrefBranch.getComplexValue(prefName, nsISupportsString).data;
michael@0:         // Try in case it's a localized string (will throw an exception if not)
michael@0:         if (pref.lockCol == PREF_IS_DEFAULT_VALUE &&
michael@0:             /^chrome:\/\/.+\/locale\/.+\.properties/.test(pref.valueCol))
michael@0:           pref.valueCol = gPrefBranch.getComplexValue(prefName, nsIPrefLocalizedString).data;
michael@0:         break;
michael@0:     }
michael@0:   } catch (e) {
michael@0:     // Also catch obscure cases in which you can't tell in advance
michael@0:     // that the pref exists but has no user or default value...
michael@0:   }
michael@0: }
michael@0: 
michael@0: function onConfigLoad()
michael@0: {
michael@0:   // Load strings
michael@0:   gConfigBundle = document.getElementById("configBundle");
michael@0: 
michael@0:   gLockStrs[PREF_IS_DEFAULT_VALUE] = gConfigBundle.getString("default");
michael@0:   gLockStrs[PREF_IS_USER_SET] = gConfigBundle.getString("user");
michael@0:   gLockStrs[PREF_IS_LOCKED] = gConfigBundle.getString("locked");
michael@0: 
michael@0:   gTypeStrs[nsIPrefBranch.PREF_STRING] = gConfigBundle.getString("string");
michael@0:   gTypeStrs[nsIPrefBranch.PREF_INT] = gConfigBundle.getString("int");
michael@0:   gTypeStrs[nsIPrefBranch.PREF_BOOL] = gConfigBundle.getString("bool");
michael@0: 
michael@0:   var showWarning = gPrefBranch.getBoolPref("general.warnOnAboutConfig");
michael@0: 
michael@0:   if (showWarning)
michael@0:     document.getElementById("warningButton").focus();
michael@0:   else
michael@0:     ShowPrefs();
michael@0: }
michael@0: 
michael@0: // Unhide the warning message
michael@0: function ShowPrefs()
michael@0: {
michael@0:   gPrefBranch.getChildList("").forEach(fetchPref);
michael@0: 
michael@0:   var descending = document.getElementsByAttribute("sortDirection", "descending");
michael@0:   if (descending.item(0)) {
michael@0:     gSortedColumn = descending[0].id;
michael@0:     gSortDirection = -1;
michael@0:   }
michael@0:   else {
michael@0:     var ascending = document.getElementsByAttribute("sortDirection", "ascending");
michael@0:     if (ascending.item(0))
michael@0:       gSortedColumn = ascending[0].id;
michael@0:     else
michael@0:       document.getElementById(gSortedColumn).setAttribute("sortDirection", "ascending");
michael@0:   }
michael@0:   gSortFunction = gSortFunctions[gSortedColumn];
michael@0:   gPrefArray.sort(gSortFunction);
michael@0:   
michael@0:   gPrefBranch.addObserver("", gPrefListener, false);
michael@0: 
michael@0:   var configTree = document.getElementById("configTree");
michael@0:   configTree.view = view;
michael@0:   configTree.controllers.insertControllerAt(0, configController);
michael@0: 
michael@0:   document.getElementById("configDeck").setAttribute("selectedIndex", 1);
michael@0:   document.getElementById("configTreeKeyset").removeAttribute("disabled");
michael@0:   if (!document.getElementById("showWarningNextTime").checked)
michael@0:     gPrefBranch.setBoolPref("general.warnOnAboutConfig", false);
michael@0: 
michael@0:   // Process about:config?filter=<string>
michael@0:   var textbox = document.getElementById("textbox");
michael@0:   // About URIs don't support query params, so do this manually
michael@0:   var loc = document.location.href;
michael@0:   var matches = /[?&]filter\=([^&]+)/i.exec(loc);
michael@0:   if (matches)
michael@0:     textbox.value = decodeURIComponent(matches[1]);
michael@0: 
michael@0:   // Even if we did not set the filter string via the URL query,
michael@0:   // textbox might have been set via some other mechanism
michael@0:   if (textbox.value)
michael@0:     FilterPrefs();
michael@0:   textbox.focus();
michael@0: }
michael@0: 
michael@0: function onConfigUnload()
michael@0: {
michael@0:   if (document.getElementById("configDeck").getAttribute("selectedIndex") == 1) {
michael@0:     gPrefBranch.removeObserver("", gPrefListener);
michael@0:     var configTree = document.getElementById("configTree");
michael@0:     configTree.view = null;
michael@0:     configTree.controllers.removeController(configController);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function FilterPrefs()
michael@0: {
michael@0:   if (document.getElementById("configDeck").getAttribute("selectedIndex") != 1) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   var substring = document.getElementById("textbox").value;
michael@0:   // Check for "/regex/[i]"
michael@0:   if (substring.charAt(0) == '/') {
michael@0:     var r = substring.match(/^\/(.*)\/(i?)$/);
michael@0:     try {
michael@0:       gFilter = RegExp(r[1], r[2]);
michael@0:     }
michael@0:     catch (e) {
michael@0:       return; // Do nothing on incomplete or bad RegExp
michael@0:     }
michael@0:   }
michael@0:   else if (substring) {
michael@0:     gFilter = RegExp(substring.replace(/([^* \w])/g, "\\$1")
michael@0:                               .replace(/^\*+/, "").replace(/\*+/g, ".*"), "i");
michael@0:   } else {
michael@0:     gFilter = null;
michael@0:   }
michael@0: 
michael@0:   var prefCol = (view.selection && view.selection.currentIndex < 0) ?
michael@0:                 null : gPrefView[view.selection.currentIndex].prefCol;
michael@0:   var oldlen = gPrefView.length;
michael@0:   gPrefView = gPrefArray;
michael@0:   if (gFilter) {
michael@0:     gPrefView = [];
michael@0:     for (var i = 0; i < gPrefArray.length; ++i)
michael@0:       if (gFilter.test(gPrefArray[i].prefCol + ";" + gPrefArray[i].valueCol))
michael@0:         gPrefView.push(gPrefArray[i]);
michael@0:   }
michael@0:   view.treebox.invalidate();
michael@0:   view.treebox.rowCountChanged(oldlen, gPrefView.length - oldlen);
michael@0:   gotoPref(prefCol);
michael@0: }
michael@0: 
michael@0: function prefColSortFunction(x, y)
michael@0: {
michael@0:   if (x.prefCol > y.prefCol)
michael@0:     return gSortDirection;
michael@0:   if (x.prefCol < y.prefCol) 
michael@0:     return -gSortDirection;
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: function lockColSortFunction(x, y)
michael@0: {
michael@0:   if (x.lockCol != y.lockCol)
michael@0:     return gSortDirection * (y.lockCol - x.lockCol);
michael@0:   return prefColSortFunction(x, y);
michael@0: }
michael@0: 
michael@0: function typeColSortFunction(x, y)
michael@0: {
michael@0:   if (x.typeCol != y.typeCol) 
michael@0:     return gSortDirection * (y.typeCol - x.typeCol);
michael@0:   return prefColSortFunction(x, y);
michael@0: }
michael@0: 
michael@0: function valueColSortFunction(x, y)
michael@0: {
michael@0:   if (x.valueCol > y.valueCol)
michael@0:     return gSortDirection;
michael@0:   if (x.valueCol < y.valueCol) 
michael@0:     return -gSortDirection;
michael@0:   return prefColSortFunction(x, y);
michael@0: }
michael@0: 
michael@0: const gSortFunctions =
michael@0: {
michael@0:   prefCol: prefColSortFunction, 
michael@0:   lockCol: lockColSortFunction, 
michael@0:   typeCol: typeColSortFunction, 
michael@0:   valueCol: valueColSortFunction
michael@0: };
michael@0: 
michael@0: const configController = {
michael@0:   supportsCommand: function supportsCommand(command) {
michael@0:     return command == "cmd_copy";
michael@0:   },
michael@0:   isCommandEnabled: function isCommandEnabled(command) {
michael@0:     return view.selection && view.selection.currentIndex >= 0;
michael@0:   },
michael@0:   doCommand: function doCommand(command) {
michael@0:     copyPref();
michael@0:   },
michael@0:   onEvent: function onEvent(event) {
michael@0:   }
michael@0: }
michael@0: 
michael@0: function updateContextMenu()
michael@0: {
michael@0:   var lockCol = PREF_IS_LOCKED;
michael@0:   var typeCol = nsIPrefBranch.PREF_STRING;
michael@0:   var valueCol = "";
michael@0:   var copyDisabled = true;
michael@0:   var prefSelected = view.selection.currentIndex >= 0;
michael@0: 
michael@0:   if (prefSelected) {
michael@0:     var prefRow = gPrefView[view.selection.currentIndex];
michael@0:     lockCol = prefRow.lockCol;
michael@0:     typeCol = prefRow.typeCol;
michael@0:     valueCol = prefRow.valueCol;
michael@0:     copyDisabled = false;
michael@0:   }
michael@0: 
michael@0:   var copyPref = document.getElementById("copyPref");
michael@0:   copyPref.setAttribute("disabled", copyDisabled);
michael@0: 
michael@0:   var copyName = document.getElementById("copyName");
michael@0:   copyName.setAttribute("disabled", copyDisabled);
michael@0: 
michael@0:   var copyValue = document.getElementById("copyValue");
michael@0:   copyValue.setAttribute("disabled", copyDisabled);
michael@0: 
michael@0:   var resetSelected = document.getElementById("resetSelected");
michael@0:   resetSelected.setAttribute("disabled", lockCol != PREF_IS_USER_SET);
michael@0: 
michael@0:   var canToggle = typeCol == nsIPrefBranch.PREF_BOOL && valueCol != "";
michael@0:   // indicates that a pref is locked or no pref is selected at all
michael@0:   var isLocked = lockCol == PREF_IS_LOCKED;
michael@0: 
michael@0:   var modifySelected = document.getElementById("modifySelected");
michael@0:   modifySelected.setAttribute("disabled", isLocked);
michael@0:   modifySelected.hidden = canToggle;
michael@0: 
michael@0:   var toggleSelected = document.getElementById("toggleSelected");
michael@0:   toggleSelected.setAttribute("disabled", isLocked);
michael@0:   toggleSelected.hidden = !canToggle;
michael@0: }
michael@0: 
michael@0: function copyPref()
michael@0: {
michael@0:   var pref = gPrefView[view.selection.currentIndex];
michael@0:   gClipboardHelper.copyString(pref.prefCol + ';' + pref.valueCol, document);
michael@0: }
michael@0: 
michael@0: function copyName()
michael@0: {
michael@0:   gClipboardHelper.copyString(gPrefView[view.selection.currentIndex].prefCol, document);
michael@0: }
michael@0: 
michael@0: function copyValue()
michael@0: {
michael@0:   gClipboardHelper.copyString(gPrefView[view.selection.currentIndex].valueCol, document);
michael@0: }
michael@0: 
michael@0: function ModifySelected()
michael@0: {
michael@0:   if (view.selection.currentIndex >= 0)
michael@0:     ModifyPref(gPrefView[view.selection.currentIndex]);
michael@0: }
michael@0: 
michael@0: function ResetSelected()
michael@0: {
michael@0:   var entry = gPrefView[view.selection.currentIndex];
michael@0:   gPrefBranch.clearUserPref(entry.prefCol);
michael@0: }
michael@0: 
michael@0: function NewPref(type)
michael@0: {
michael@0:   var result = { value: "" };
michael@0:   var dummy = { value: 0 };
michael@0:   if (Services.prompt.prompt(window,
michael@0:                              gConfigBundle.getFormattedString("new_title",
michael@0:                                                               [gTypeStrs[type]]),
michael@0:                              gConfigBundle.getString("new_prompt"),
michael@0:                              result,
michael@0:                              null,
michael@0:                              dummy)) {
michael@0:     result.value = result.value.trim();
michael@0:     if (!result.value) {
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     var pref;
michael@0:     if (result.value in gPrefHash)
michael@0:       pref = gPrefHash[result.value];
michael@0:     else
michael@0:       pref = { prefCol: result.value, lockCol: PREF_IS_DEFAULT_VALUE, typeCol: type, valueCol: "" };
michael@0:     if (ModifyPref(pref))
michael@0:       setTimeout(gotoPref, 0, result.value);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function gotoPref(pref)
michael@0: {
michael@0:   // make sure the pref exists and is displayed in the current view
michael@0:   var index = pref in gPrefHash ? getViewIndexOfPref(gPrefHash[pref]) : -1;
michael@0:   if (index >= 0) {
michael@0:     view.selection.select(index);
michael@0:     view.treebox.ensureRowIsVisible(index);
michael@0:   } else {
michael@0:     view.selection.clearSelection();
michael@0:     view.selection.currentIndex = -1;
michael@0:   }
michael@0: }
michael@0: 
michael@0: function ModifyPref(entry)
michael@0: {
michael@0:   if (entry.lockCol == PREF_IS_LOCKED)
michael@0:     return false;
michael@0:   var title = gConfigBundle.getFormattedString("modify_title", [gTypeStrs[entry.typeCol]]);
michael@0:   if (entry.typeCol == nsIPrefBranch.PREF_BOOL) {
michael@0:     var check = { value: entry.valueCol == "false" };
michael@0:     if (!entry.valueCol && !Services.prompt.select(window, title, entry.prefCol, 2, [false, true], check))
michael@0:       return false;
michael@0:     gPrefBranch.setBoolPref(entry.prefCol, check.value);
michael@0:   } else {
michael@0:     var result = { value: entry.valueCol };
michael@0:     var dummy = { value: 0 };
michael@0:     if (!Services.prompt.prompt(window, title, entry.prefCol, result, null, dummy))
michael@0:       return false;
michael@0:     if (entry.typeCol == nsIPrefBranch.PREF_INT) {
michael@0:       // | 0 converts to integer or 0; - 0 to float or NaN.
michael@0:       // Thus, this check should catch all cases.
michael@0:       var val = result.value | 0;
michael@0:       if (val != result.value - 0) {
michael@0:         var err_title = gConfigBundle.getString("nan_title");
michael@0:         var err_text = gConfigBundle.getString("nan_text");
michael@0:         Services.prompt.alert(window, err_title, err_text);
michael@0:         return false;
michael@0:       }
michael@0:       gPrefBranch.setIntPref(entry.prefCol, val);
michael@0:     } else {
michael@0:       var supportsString = Components.classes[nsSupportsString_CONTRACTID].createInstance(nsISupportsString);
michael@0:       supportsString.data = result.value;
michael@0:       gPrefBranch.setComplexValue(entry.prefCol, nsISupportsString, supportsString);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   Services.prefs.savePrefFile(null);
michael@0:   return true;
michael@0: }