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.HtmlDragManager");
dojo.require("dojo.dnd.DragAndDrop");
dojo.require("dojo.event.*");
dojo.require("dojo.lang.array");
dojo.require("dojo.html.common");
dojo.require("dojo.html.layout");
dojo.declare("dojo.dnd.HtmlDragManager", dojo.dnd.DragManager, {disabled:false, nestedTargets:false, mouseDownTimer:null, dsCounter:0, dsPrefix:"dojoDragSource", dropTargetDimensions:[], currentDropTarget:null, previousDropTarget:null, _dragTriggered:false, selectedSources:[], dragObjects:[], dragSources:[], dropTargets:[], currentX:null, currentY:null, lastX:null, lastY:null, mouseDownX:null, mouseDownY:null, threshold:7, dropAcceptable:false, cancelEvent:function (e) {
        e.stopPropagation();
        e.preventDefault();
}, registerDragSource:function (ds) {
        if (ds["domNode"]) {
                var dp = this.dsPrefix;
                var dpIdx = dp + "Idx_" + (this.dsCounter++);
                ds.dragSourceId = dpIdx;
                this.dragSources[dpIdx] = ds;
                ds.domNode.setAttribute(dp, dpIdx);
                if (dojo.render.html.ie) {
                        dojo.event.browser.addListener(ds.domNode, "ondragstart", this.cancelEvent);
                }
        }
}, unregisterDragSource:function (ds) {
        if (ds["domNode"]) {
                var dp = this.dsPrefix;
                var dpIdx = ds.dragSourceId;
                delete ds.dragSourceId;
                delete this.dragSources[dpIdx];
                ds.domNode.setAttribute(dp, null);
                if (dojo.render.html.ie) {
                        dojo.event.browser.removeListener(ds.domNode, "ondragstart", this.cancelEvent);
                }
        }
}, registerDropTarget:function (dt) {
        this.dropTargets.push(dt);
}, unregisterDropTarget:function (dt) {
        var index = dojo.lang.find(this.dropTargets, dt, true);
        if (index >= 0) {
                this.dropTargets.splice(index, 1);
        }
}, getDragSource:function (e) {
        var tn = e.target;
        if (tn === dojo.body()) {
                return;
        }
        var ta = dojo.html.getAttribute(tn, this.dsPrefix);
        while ((!ta) && (tn)) {
                tn = tn.parentNode;
                if ((!tn) || (tn === dojo.body())) {
                        return;
                }
                ta = dojo.html.getAttribute(tn, this.dsPrefix);
        }
        return this.dragSources[ta];
}, onKeyDown:function (e) {
}, onMouseDown:function (e) {
        if (this.disabled) {
                return;
        }
        if (dojo.render.html.ie) {
                if (e.button != 1) {
                        return;
                }
        } else {
                if (e.which != 1) {
                        return;
                }
        }
        var target = e.target.nodeType == dojo.html.TEXT_NODE ? e.target.parentNode : e.target;
        if (dojo.html.isTag(target, "button", "textarea", "input", "select", "option")) {
                return;
        }
        var ds = this.getDragSource(e);
        if (!ds) {
                return;
        }
        if (!dojo.lang.inArray(this.selectedSources, ds)) {
                this.selectedSources.push(ds);
                ds.onSelected();
        }
        this.mouseDownX = e.pageX;
        this.mouseDownY = e.pageY;
        e.preventDefault();
        dojo.event.connect(document, "onmousemove", this, "onMouseMove");
}, onMouseUp:function (e, cancel) {
        if (this.selectedSources.length == 0) {
                return;
        }
        this.mouseDownX = null;
        this.mouseDownY = null;
        this._dragTriggered = false;
        e.dragSource = this.dragSource;
        if ((!e.shiftKey) && (!e.ctrlKey)) {
                if (this.currentDropTarget) {
                        this.currentDropTarget.onDropStart();
                }
                dojo.lang.forEach(this.dragObjects, function (tempDragObj) {
                        var ret = null;
                        if (!tempDragObj) {
                                return;
                        }
                        if (this.currentDropTarget) {
                                e.dragObject = tempDragObj;
                                var ce = this.currentDropTarget.domNode.childNodes;
                                if (ce.length > 0) {
                                        e.dropTarget = ce[0];
                                        while (e.dropTarget == tempDragObj.domNode) {
                                                e.dropTarget = e.dropTarget.nextSibling;
                                        }
                                } else {
                                        e.dropTarget = this.currentDropTarget.domNode;
                                }
                                if (this.dropAcceptable) {
                                        ret = this.currentDropTarget.onDrop(e);
                                } else {
                                        this.currentDropTarget.onDragOut(e);
                                }
                        }
                        e.dragStatus = this.dropAcceptable && ret ? "dropSuccess" : "dropFailure";
                        dojo.lang.delayThese([function () {
                                try {
                                        tempDragObj.dragSource.onDragEnd(e);
                                }
                                catch (err) {
                                        var ecopy = {};
                                        for (var i in e) {
                                                if (i == "type") {
                                                        ecopy.type = "mouseup";
                                                        continue;
                                                }
                                                ecopy[i] = e[i];
                                        }
                                        tempDragObj.dragSource.onDragEnd(ecopy);
                                }
                        }, function () {
                                tempDragObj.onDragEnd(e);
                        }]);
                }, this);
                this.selectedSources = [];
                this.dragObjects = [];
                this.dragSource = null;
                if (this.currentDropTarget) {
                        this.currentDropTarget.onDropEnd();
                }
        } else {
        }
        dojo.event.disconnect(document, "onmousemove", this, "onMouseMove");
        this.currentDropTarget = null;
}, onScroll:function () {
        for (var i = 0; i < this.dragObjects.length; i++) {
                if (this.dragObjects[i].updateDragOffset) {
                        this.dragObjects[i].updateDragOffset();
                }
        }
        if (this.dragObjects.length) {
                this.cacheTargetLocations();
        }
}, _dragStartDistance:function (x, y) {
        if ((!this.mouseDownX) || (!this.mouseDownX)) {
                return;
        }
        var dx = Math.abs(x - this.mouseDownX);
        var dx2 = dx * dx;
        var dy = Math.abs(y - this.mouseDownY);
        var dy2 = dy * dy;
        return parseInt(Math.sqrt(dx2 + dy2), 10);
}, cacheTargetLocations:function () {
        dojo.profile.start("cacheTargetLocations");
        this.dropTargetDimensions = [];
        dojo.lang.forEach(this.dropTargets, function (tempTarget) {
                var tn = tempTarget.domNode;
                if (!tn || !tempTarget.accepts([this.dragSource])) {
                        return;
                }
                var abs = dojo.html.getAbsolutePosition(tn, true);
                var bb = dojo.html.getBorderBox(tn);
                this.dropTargetDimensions.push([[abs.x, abs.y], [abs.x + bb.width, abs.y + bb.height], tempTarget]);
        }, this);
        dojo.profile.end("cacheTargetLocations");
}, onMouseMove:function (e) {
        if ((dojo.render.html.ie) && (e.button != 1)) {
                this.currentDropTarget = null;
                this.onMouseUp(e, true);
                return;
        }
        if ((this.selectedSources.length) && (!this.dragObjects.length)) {
                var dx;
                var dy;
                if (!this._dragTriggered) {
                        this._dragTriggered = (this._dragStartDistance(e.pageX, e.pageY) > this.threshold);
                        if (!this._dragTriggered) {
                                return;
                        }
                        dx = e.pageX - this.mouseDownX;
                        dy = e.pageY - this.mouseDownY;
                }
                this.dragSource = this.selectedSources[0];
                dojo.lang.forEach(this.selectedSources, function (tempSource) {
                        if (!tempSource) {
                                return;
                        }
                        var tdo = tempSource.onDragStart(e);
                        if (tdo) {
                                tdo.onDragStart(e);
                                tdo.dragOffset.y += dy;
                                tdo.dragOffset.x += dx;
                                tdo.dragSource = tempSource;
                                this.dragObjects.push(tdo);
                        }
                }, this);
                this.previousDropTarget = null;
                this.cacheTargetLocations();
        }
        dojo.lang.forEach(this.dragObjects, function (dragObj) {
                if (dragObj) {
                        dragObj.onDragMove(e);
                }
        });
        if (this.currentDropTarget) {
                var c = dojo.html.toCoordinateObject(this.currentDropTarget.domNode, true);
                var dtp = [[c.x, c.y], [c.x + c.width, c.y + c.height]];
        }
        if ((!this.nestedTargets) && (dtp) && (this.isInsideBox(e, dtp))) {
                if (this.dropAcceptable) {
                        this.currentDropTarget.onDragMove(e, this.dragObjects);
                }
        } else {
                var bestBox = this.findBestTarget(e);
                if (bestBox.target === null) {
                        if (this.currentDropTarget) {
                                this.currentDropTarget.onDragOut(e);
                                this.previousDropTarget = this.currentDropTarget;
                                this.currentDropTarget = null;
                        }
                        this.dropAcceptable = false;
                        return;
                }
                if (this.currentDropTarget !== bestBox.target) {
                        if (this.currentDropTarget) {
                                this.previousDropTarget = this.currentDropTarget;
                                this.currentDropTarget.onDragOut(e);
                        }
                        this.currentDropTarget = bestBox.target;
                        e.dragObjects = this.dragObjects;
                        this.dropAcceptable = this.currentDropTarget.onDragOver(e);
                } else {
                        if (this.dropAcceptable) {
                                this.currentDropTarget.onDragMove(e, this.dragObjects);
                        }
                }
        }
}, findBestTarget:function (e) {
        var _this = this;
        var bestBox = new Object();
        bestBox.target = null;
        bestBox.points = null;
        dojo.lang.every(this.dropTargetDimensions, function (tmpDA) {
                if (!_this.isInsideBox(e, tmpDA)) {
                        return true;
                }
                bestBox.target = tmpDA[2];
                bestBox.points = tmpDA;
                return Boolean(_this.nestedTargets);
        });
        return bestBox;
}, isInsideBox:function (e, coords) {
        if ((e.pageX > coords[0][0]) && (e.pageX < coords[1][0]) && (e.pageY > coords[0][1]) && (e.pageY < coords[1][1])) {
                return true;
        }
        return false;
}, onMouseOver:function (e) {
}, onMouseOut:function (e) {
}});
dojo.dnd.dragManager = new dojo.dnd.HtmlDragManager();
(function () {
        var d = document;
        var dm = dojo.dnd.dragManager;
        dojo.event.connect(d, "onkeydown", dm, "onKeyDown");
        dojo.event.connect(d, "onmouseover", dm, "onMouseOver");
        dojo.event.connect(d, "onmouseout", dm, "onMouseOut");
        dojo.event.connect(d, "onmousedown", dm, "onMouseDown");
        dojo.event.connect(d, "onmouseup", dm, "onMouseUp");
        dojo.event.connect(window, "onscroll", dm, "onScroll");
})();