Subversion Repositories Applications.papyrus

/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.selection.Selection");
dojo.require("dojo.lang.array");
dojo.require("dojo.lang.func");
dojo.require("dojo.lang.common");
dojo.require("dojo.math");
dojo.declare("dojo.selection.Selection", null, {initializer:function (items, isCollection) {
        this.items = [];
        this.selection = [];
        this._pivotItems = [];
        this.clearItems();
        if (items) {
                if (isCollection) {
                        this.setItemsCollection(items);
                } else {
                        this.setItems(items);
                }
        }
}, items:null, selection:null, lastSelected:null, allowImplicit:true, length:0, isGrowable:true, _pivotItems:null, _pivotItem:null, onSelect:function (item) {
}, onDeselect:function (item) {
}, onSelectChange:function (item, selected) {
}, _find:function (item, inSelection) {
        if (inSelection) {
                return dojo.lang.find(this.selection, item);
        } else {
                return dojo.lang.find(this.items, item);
        }
}, isSelectable:function (item) {
        return true;
}, setItems:function () {
        this.clearItems();
        this.addItems.call(this, arguments);
}, setItemsCollection:function (collection) {
        this.items = collection;
}, addItems:function () {
        var args = dojo.lang.unnest(arguments);
        for (var i = 0; i < args.length; i++) {
                this.items.push(args[i]);
        }
}, addItemsAt:function (item, before) {
        if (this.items.length == 0) {
                return this.addItems(dojo.lang.toArray(arguments, 2));
        }
        if (!this.isItem(item)) {
                item = this.items[item];
        }
        if (!item) {
                throw new Error("addItemsAt: item doesn't exist");
        }
        var idx = this._find(item);
        if (idx > 0 && before) {
                idx--;
        }
        for (var i = 2; i < arguments.length; i++) {
                if (!this.isItem(arguments[i])) {
                        this.items.splice(idx++, 0, arguments[i]);
                }
        }
}, removeItem:function (item) {
        var idx = this._find(item);
        if (idx > -1) {
                this.items.splice(idx, 1);
        }
        idx = this._find(item, true);
        if (idx > -1) {
                this.selection.splice(idx, 1);
        }
}, clearItems:function () {
        this.items = [];
        this.deselectAll();
}, isItem:function (item) {
        return this._find(item) > -1;
}, isSelected:function (item) {
        return this._find(item, true) > -1;
}, selectFilter:function (item, selection, add, grow) {
        return true;
}, update:function (item, add, grow, noToggle) {
        if (!this.isItem(item)) {
                return false;
        }
        if (this.isGrowable && grow) {
                if ((!this.isSelected(item)) && this.selectFilter(item, this.selection, false, true)) {
                        this.grow(item);
                        this.lastSelected = item;
                }
        } else {
                if (add) {
                        if (this.selectFilter(item, this.selection, true, false)) {
                                if (noToggle) {
                                        if (this.select(item)) {
                                                this.lastSelected = item;
                                        }
                                } else {
                                        if (this.toggleSelected(item)) {
                                                this.lastSelected = item;
                                        }
                                }
                        }
                } else {
                        this.deselectAll();
                        this.select(item);
                }
        }
        this.length = this.selection.length;
        return true;
}, grow:function (toItem, fromItem) {
        if (!this.isGrowable) {
                return;
        }
        if (arguments.length == 1) {
                fromItem = this._pivotItem;
                if (!fromItem && this.allowImplicit) {
                        fromItem = this.items[0];
                }
        }
        if (!toItem || !fromItem) {
                return false;
        }
        var fromIdx = this._find(fromItem);
        var toDeselect = {};
        var lastIdx = -1;
        if (this.lastSelected) {
                lastIdx = this._find(this.lastSelected);
                var step = fromIdx < lastIdx ? -1 : 1;
                var range = dojo.math.range(lastIdx, fromIdx, step);
                for (var i = 0; i < range.length; i++) {
                        toDeselect[range[i]] = true;
                }
        }
        var toIdx = this._find(toItem);
        var step = fromIdx < toIdx ? -1 : 1;
        var shrink = lastIdx >= 0 && step == 1 ? lastIdx < toIdx : lastIdx > toIdx;
        var range = dojo.math.range(toIdx, fromIdx, step);
        if (range.length) {
                for (var i = range.length - 1; i >= 0; i--) {
                        var item = this.items[range[i]];
                        if (this.selectFilter(item, this.selection, false, true)) {
                                if (this.select(item, true) || shrink) {
                                        this.lastSelected = item;
                                }
                                if (range[i] in toDeselect) {
                                        delete toDeselect[range[i]];
                                }
                        }
                }
        } else {
                this.lastSelected = fromItem;
        }
        for (var i in toDeselect) {
                if (this.items[i] == this.lastSelected) {
                }
                this.deselect(this.items[i]);
        }
        this._updatePivot();
}, growUp:function () {
        if (!this.isGrowable) {
                return;
        }
        var idx = this._find(this.lastSelected) - 1;
        while (idx >= 0) {
                if (this.selectFilter(this.items[idx], this.selection, false, true)) {
                        this.grow(this.items[idx]);
                        break;
                }
                idx--;
        }
}, growDown:function () {
        if (!this.isGrowable) {
                return;
        }
        var idx = this._find(this.lastSelected);
        if (idx < 0 && this.allowImplicit) {
                this.select(this.items[0]);
                idx = 0;
        }
        idx++;
        while (idx > 0 && idx < this.items.length) {
                if (this.selectFilter(this.items[idx], this.selection, false, true)) {
                        this.grow(this.items[idx]);
                        break;
                }
                idx++;
        }
}, toggleSelected:function (item, noPivot) {
        if (this.isItem(item)) {
                if (this.select(item, noPivot)) {
                        return 1;
                }
                if (this.deselect(item)) {
                        return -1;
                }
        }
        return 0;
}, select:function (item, noPivot) {
        if (this.isItem(item) && !this.isSelected(item) && this.isSelectable(item)) {
                this.selection.push(item);
                this.lastSelected = item;
                this.onSelect(item);
                this.onSelectChange(item, true);
                if (!noPivot) {
                        this._addPivot(item);
                }
                this.length = this.selection.length;
                return true;
        }
        return false;
}, deselect:function (item) {
        var idx = this._find(item, true);
        if (idx > -1) {
                this.selection.splice(idx, 1);
                this.onDeselect(item);
                this.onSelectChange(item, false);
                if (item == this.lastSelected) {
                        this.lastSelected = null;
                }
                this._removePivot(item);
                this.length = this.selection.length;
                return true;
        }
        return false;
}, selectAll:function () {
        for (var i = 0; i < this.items.length; i++) {
                this.select(this.items[i]);
        }
}, deselectAll:function () {
        while (this.selection && this.selection.length) {
                this.deselect(this.selection[0]);
        }
}, selectNext:function () {
        var idx = this._find(this.lastSelected);
        while (idx > -1 && ++idx < this.items.length) {
                if (this.isSelectable(this.items[idx])) {
                        this.deselectAll();
                        this.select(this.items[idx]);
                        return true;
                }
        }
        return false;
}, selectPrevious:function () {
        var idx = this._find(this.lastSelected);
        while (idx-- > 0) {
                if (this.isSelectable(this.items[idx])) {
                        this.deselectAll();
                        this.select(this.items[idx]);
                        return true;
                }
        }
        return false;
}, selectFirst:function () {
        this.deselectAll();
        var idx = 0;
        while (this.items[idx] && !this.select(this.items[idx])) {
                idx++;
        }
        return this.items[idx] ? true : false;
}, selectLast:function () {
        this.deselectAll();
        var idx = this.items.length - 1;
        while (this.items[idx] && !this.select(this.items[idx])) {
                idx--;
        }
        return this.items[idx] ? true : false;
}, _addPivot:function (item, andClear) {
        this._pivotItem = item;
        if (andClear) {
                this._pivotItems = [item];
        } else {
                this._pivotItems.push(item);
        }
}, _removePivot:function (item) {
        var i = dojo.lang.find(this._pivotItems, item);
        if (i > -1) {
                this._pivotItems.splice(i, 1);
                this._pivotItem = this._pivotItems[this._pivotItems.length - 1];
        }
        this._updatePivot();
}, _updatePivot:function () {
        if (this._pivotItems.length == 0) {
                if (this.lastSelected) {
                        this._addPivot(this.lastSelected);
                }
        }
}, sorted:function () {
        return dojo.lang.toArray(this.selection).sort(dojo.lang.hitch(this, function (a, b) {
                var A = this._find(a), B = this._find(b);
                if (A > B) {
                        return 1;
                } else {
                        if (A < B) {
                                return -1;
                        } else {
                                return 0;
                        }
                }
        }));
}, updateSelected:function () {
        for (var i = 0; i < this.selection.length; i++) {
                if (this._find(this.selection[i]) < 0) {
                        var removed = this.selection.splice(i, 1);
                        this._removePivot(removed[0]);
                }
        }
        this.length = this.selection.length;
}});