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.dnd.TreeDragAndDrop");
dojo.require("dojo.dnd.HtmlDragAndDrop");
dojo.require("dojo.lang.func");
dojo.require("dojo.lang.array");
dojo.require("dojo.lang.extras");
dojo.require("dojo.html.layout");
dojo.dnd.TreeDragSource = function (node, syncController, type, treeNode) {
        this.controller = syncController;
        this.treeNode = treeNode;
        dojo.dnd.HtmlDragSource.call(this, node, type);
};
dojo.inherits(dojo.dnd.TreeDragSource, dojo.dnd.HtmlDragSource);
dojo.lang.extend(dojo.dnd.TreeDragSource, {onDragStart:function () {
        var dragObject = dojo.dnd.HtmlDragSource.prototype.onDragStart.call(this);
        dragObject.treeNode = this.treeNode;
        dragObject.onDragStart = dojo.lang.hitch(dragObject, function (e) {
                this.savedSelectedNode = this.treeNode.tree.selector.selectedNode;
                if (this.savedSelectedNode) {
                        this.savedSelectedNode.unMarkSelected();
                }
                var result = dojo.dnd.HtmlDragObject.prototype.onDragStart.apply(this, arguments);
                var cloneGrid = this.dragClone.getElementsByTagName("img");
                for (var i = 0; i < cloneGrid.length; i++) {
                        cloneGrid.item(i).style.backgroundImage = "url()";
                }
                return result;
        });
        dragObject.onDragEnd = function (e) {
                if (this.savedSelectedNode) {
                        this.savedSelectedNode.markSelected();
                }
                return dojo.dnd.HtmlDragObject.prototype.onDragEnd.apply(this, arguments);
        };
        return dragObject;
}, onDragEnd:function (e) {
        var res = dojo.dnd.HtmlDragSource.prototype.onDragEnd.call(this, e);
        return res;
}});
dojo.dnd.TreeDropTarget = function (domNode, controller, type, treeNode) {
        this.treeNode = treeNode;
        this.controller = controller;
        dojo.dnd.HtmlDropTarget.apply(this, [domNode, type]);
};
dojo.inherits(dojo.dnd.TreeDropTarget, dojo.dnd.HtmlDropTarget);
dojo.lang.extend(dojo.dnd.TreeDropTarget, {autoExpandDelay:1500, autoExpandTimer:null, position:null, indicatorStyle:"2px black solid", showIndicator:function (position) {
        if (this.position == position) {
                return;
        }
        this.hideIndicator();
        this.position = position;
        if (position == "before") {
                this.treeNode.labelNode.style.borderTop = this.indicatorStyle;
        } else {
                if (position == "after") {
                        this.treeNode.labelNode.style.borderBottom = this.indicatorStyle;
                } else {
                        if (position == "onto") {
                                this.treeNode.markSelected();
                        }
                }
        }
}, hideIndicator:function () {
        this.treeNode.labelNode.style.borderBottom = "";
        this.treeNode.labelNode.style.borderTop = "";
        this.treeNode.unMarkSelected();
        this.position = null;
}, onDragOver:function (e) {
        var accepts = dojo.dnd.HtmlDropTarget.prototype.onDragOver.apply(this, arguments);
        if (accepts && this.treeNode.isFolder && !this.treeNode.isExpanded) {
                this.setAutoExpandTimer();
        }
        return accepts;
}, accepts:function (dragObjects) {
        var accepts = dojo.dnd.HtmlDropTarget.prototype.accepts.apply(this, arguments);
        if (!accepts) {
                return false;
        }
        var sourceTreeNode = dragObjects[0].treeNode;
        if (dojo.lang.isUndefined(sourceTreeNode) || !sourceTreeNode || !sourceTreeNode.isTreeNode) {
                dojo.raise("Source is not TreeNode or not found");
        }
        if (sourceTreeNode === this.treeNode) {
                return false;
        }
        return true;
}, setAutoExpandTimer:function () {
        var _this = this;
        var autoExpand = function () {
                if (dojo.dnd.dragManager.currentDropTarget === _this) {
                        _this.controller.expand(_this.treeNode);
                }
        };
        this.autoExpandTimer = dojo.lang.setTimeout(autoExpand, _this.autoExpandDelay);
}, getDNDMode:function () {
        return this.treeNode.tree.DNDMode;
}, getAcceptPosition:function (e, sourceTreeNode) {
        var DNDMode = this.getDNDMode();
        if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO && !(!this.treeNode.actionIsDisabled(dojo.widget.TreeNode.prototype.actions.ADDCHILD) && sourceTreeNode.parent !== this.treeNode && this.controller.canMove(sourceTreeNode, this.treeNode))) {
                DNDMode &= ~dojo.widget.Tree.prototype.DNDModes.ONTO;
        }
        var position = this.getPosition(e, DNDMode);
        if (position == "onto" || (!this.isAdjacentNode(sourceTreeNode, position) && this.controller.canMove(sourceTreeNode, this.treeNode.parent))) {
                return position;
        } else {
                return false;
        }
}, onDragOut:function (e) {
        this.clearAutoExpandTimer();
        this.hideIndicator();
}, clearAutoExpandTimer:function () {
        if (this.autoExpandTimer) {
                clearTimeout(this.autoExpandTimer);
                this.autoExpandTimer = null;
        }
}, onDragMove:function (e, dragObjects) {
        var sourceTreeNode = dragObjects[0].treeNode;
        var position = this.getAcceptPosition(e, sourceTreeNode);
        if (position) {
                this.showIndicator(position);
        }
}, isAdjacentNode:function (sourceNode, position) {
        if (sourceNode === this.treeNode) {
                return true;
        }
        if (sourceNode.getNextSibling() === this.treeNode && position == "before") {
                return true;
        }
        if (sourceNode.getPreviousSibling() === this.treeNode && position == "after") {
                return true;
        }
        return false;
}, getPosition:function (e, DNDMode) {
        var node = dojo.byId(this.treeNode.labelNode);
        var mousey = e.pageY || e.clientY + dojo.body().scrollTop;
        var nodey = dojo.html.getAbsolutePosition(node).y;
        var height = dojo.html.getBorderBox(node).height;
        var relY = mousey - nodey;
        var p = relY / height;
        var position = "";
        if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO && DNDMode & dojo.widget.Tree.prototype.DNDModes.BETWEEN) {
                if (p <= 0.3) {
                        position = "before";
                } else {
                        if (p <= 0.7) {
                                position = "onto";
                        } else {
                                position = "after";
                        }
                }
        } else {
                if (DNDMode & dojo.widget.Tree.prototype.DNDModes.BETWEEN) {
                        if (p <= 0.5) {
                                position = "before";
                        } else {
                                position = "after";
                        }
                } else {
                        if (DNDMode & dojo.widget.Tree.prototype.DNDModes.ONTO) {
                                position = "onto";
                        }
                }
        }
        return position;
}, getTargetParentIndex:function (sourceTreeNode, position) {
        var index = position == "before" ? this.treeNode.getParentIndex() : this.treeNode.getParentIndex() + 1;
        if (this.treeNode.parent === sourceTreeNode.parent && this.treeNode.getParentIndex() > sourceTreeNode.getParentIndex()) {
                index--;
        }
        return index;
}, onDrop:function (e) {
        var position = this.position;
        this.onDragOut(e);
        var sourceTreeNode = e.dragObject.treeNode;
        if (!dojo.lang.isObject(sourceTreeNode)) {
                dojo.raise("TreeNode not found in dragObject");
        }
        if (position == "onto") {
                return this.controller.move(sourceTreeNode, this.treeNode, 0);
        } else {
                var index = this.getTargetParentIndex(sourceTreeNode, position);
                return this.controller.move(sourceTreeNode, this.treeNode.parent, index);
        }
}});
dojo.dnd.TreeDNDController = function (treeController) {
        this.treeController = treeController;
        this.dragSources = {};
        this.dropTargets = {};
};
dojo.lang.extend(dojo.dnd.TreeDNDController, {listenTree:function (tree) {
        dojo.event.topic.subscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode");
        dojo.event.topic.subscribe(tree.eventNames.moveFrom, this, "onMoveFrom");
        dojo.event.topic.subscribe(tree.eventNames.moveTo, this, "onMoveTo");
        dojo.event.topic.subscribe(tree.eventNames.addChild, this, "onAddChild");
        dojo.event.topic.subscribe(tree.eventNames.removeNode, this, "onRemoveNode");
        dojo.event.topic.subscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy");
}, unlistenTree:function (tree) {
        dojo.event.topic.unsubscribe(tree.eventNames.createDOMNode, this, "onCreateDOMNode");
        dojo.event.topic.unsubscribe(tree.eventNames.moveFrom, this, "onMoveFrom");
        dojo.event.topic.unsubscribe(tree.eventNames.moveTo, this, "onMoveTo");
        dojo.event.topic.unsubscribe(tree.eventNames.addChild, this, "onAddChild");
        dojo.event.topic.unsubscribe(tree.eventNames.removeNode, this, "onRemoveNode");
        dojo.event.topic.unsubscribe(tree.eventNames.treeDestroy, this, "onTreeDestroy");
}, onTreeDestroy:function (message) {
        this.unlistenTree(message.source);
}, onCreateDOMNode:function (message) {
        this.registerDNDNode(message.source);
}, onAddChild:function (message) {
        this.registerDNDNode(message.child);
}, onMoveFrom:function (message) {
        var _this = this;
        dojo.lang.forEach(message.child.getDescendants(), function (node) {
                _this.unregisterDNDNode(node);
        });
}, onMoveTo:function (message) {
        var _this = this;
        dojo.lang.forEach(message.child.getDescendants(), function (node) {
                _this.registerDNDNode(node);
        });
}, registerDNDNode:function (node) {
        if (!node.tree.DNDMode) {
                return;
        }
        var source = null;
        var target = null;
        if (!node.actionIsDisabled(node.actions.MOVE)) {
                var source = new dojo.dnd.TreeDragSource(node.labelNode, this, node.tree.widgetId, node);
                this.dragSources[node.widgetId] = source;
        }
        var target = new dojo.dnd.TreeDropTarget(node.labelNode, this.treeController, node.tree.DNDAcceptTypes, node);
        this.dropTargets[node.widgetId] = target;
}, unregisterDNDNode:function (node) {
        if (this.dragSources[node.widgetId]) {
                dojo.dnd.dragManager.unregisterDragSource(this.dragSources[node.widgetId]);
                delete this.dragSources[node.widgetId];
        }
        if (this.dropTargets[node.widgetId]) {
                dojo.dnd.dragManager.unregisterDropTarget(this.dropTargets[node.widgetId]);
                delete this.dropTargets[node.widgetId];
        }
}});