1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/content/treeUtils.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,78 @@
1.4 +// -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 +
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +var gTreeUtils = {
1.11 + deleteAll: function (aTree, aView, aItems, aDeletedItems)
1.12 + {
1.13 + for (var i = 0; i < aItems.length; ++i)
1.14 + aDeletedItems.push(aItems[i]);
1.15 + aItems.splice(0, aItems.length);
1.16 + var oldCount = aView.rowCount;
1.17 + aView._rowCount = 0;
1.18 + aTree.treeBoxObject.rowCountChanged(0, -oldCount);
1.19 + },
1.20 +
1.21 + deleteSelectedItems: function (aTree, aView, aItems, aDeletedItems)
1.22 + {
1.23 + var selection = aTree.view.selection;
1.24 + selection.selectEventsSuppressed = true;
1.25 +
1.26 + var rc = selection.getRangeCount();
1.27 + for (var i = 0; i < rc; ++i) {
1.28 + var min = { }; var max = { };
1.29 + selection.getRangeAt(i, min, max);
1.30 + for (var j = min.value; j <= max.value; ++j) {
1.31 + aDeletedItems.push(aItems[j]);
1.32 + aItems[j] = null;
1.33 + }
1.34 + }
1.35 +
1.36 + var nextSelection = 0;
1.37 + for (i = 0; i < aItems.length; ++i) {
1.38 + if (!aItems[i]) {
1.39 + var j = i;
1.40 + while (j < aItems.length && !aItems[j])
1.41 + ++j;
1.42 + aItems.splice(i, j - i);
1.43 + nextSelection = j < aView.rowCount ? j - 1 : j - 2;
1.44 + aView._rowCount -= j - i;
1.45 + aTree.treeBoxObject.rowCountChanged(i, i - j);
1.46 + }
1.47 + }
1.48 +
1.49 + if (aItems.length) {
1.50 + selection.select(nextSelection);
1.51 + aTree.treeBoxObject.ensureRowIsVisible(nextSelection);
1.52 + aTree.focus();
1.53 + }
1.54 + selection.selectEventsSuppressed = false;
1.55 + },
1.56 +
1.57 + sort: function (aTree, aView, aDataSet, aColumn, aComparator,
1.58 + aLastSortColumn, aLastSortAscending)
1.59 + {
1.60 + var ascending = (aColumn == aLastSortColumn) ? !aLastSortAscending : true;
1.61 + if (aDataSet.length == 0)
1.62 + return ascending;
1.63 +
1.64 + var numericSort = !isNaN(aDataSet[0][aColumn]);
1.65 + var sortFunction = null;
1.66 + if (aComparator) {
1.67 + sortFunction = function (a, b) { return aComparator(a[aColumn], b[aColumn]); };
1.68 + }
1.69 + aDataSet.sort(sortFunction);
1.70 + if (!ascending)
1.71 + aDataSet.reverse();
1.72 +
1.73 + aTree.view.selection.clearSelection();
1.74 + aTree.view.selection.select(0);
1.75 + aTree.treeBoxObject.invalidate();
1.76 + aTree.treeBoxObject.ensureRowIsVisible(0);
1.77 +
1.78 + return ascending;
1.79 + }
1.80 +};
1.81 +
