dojo.declare()

in plugins/struts2-dojo-plugin/src/main/resources/org/apache/struts2/static/dojo/src/dnd/HtmlDragAndDrop.js [64:213]

• 143 lines of code
• 29 McCabe index (conditional complexity)

dojo.declare("dojo.dnd.HtmlDragObject", dojo.dnd.DragObject, {dragClass:"", opacity:0.5, createIframe:true, disableX:false, disableY:false, createDragNode:function () {
	var node = this.domNode.cloneNode(true);
	if (this.dragClass) {
		dojo.html.addClass(node, this.dragClass);
	}
	if (this.opacity < 1) {
		dojo.html.setOpacity(node, this.opacity);
	}
	var ltn = node.tagName.toLowerCase();
	var isTr = (ltn == "tr");
	if ((isTr) || (ltn == "tbody")) {
		var doc = this.domNode.ownerDocument;
		var table = doc.createElement("table");
		if (isTr) {
			var tbody = doc.createElement("tbody");
			table.appendChild(tbody);
			tbody.appendChild(node);
		} else {
			table.appendChild(node);
		}
		var tmpSrcTr = ((isTr) ? this.domNode : this.domNode.firstChild);
		var tmpDstTr = ((isTr) ? node : node.firstChild);
		var domTds = tmpSrcTr.childNodes;
		var cloneTds = tmpDstTr.childNodes;
		for (var i = 0; i < domTds.length; i++) {
			if ((cloneTds[i]) && (cloneTds[i].style)) {
				cloneTds[i].style.width = dojo.html.getContentBox(domTds[i]).width + "px";
			}
		}
		node = table;
	}
	if ((dojo.render.html.ie55 || dojo.render.html.ie60) && this.createIframe) {
		with (node.style) {
			top = "0px";
			left = "0px";
		}
		var outer = document.createElement("div");
		outer.appendChild(node);
		this.bgIframe = new dojo.html.BackgroundIframe(outer);
		outer.appendChild(this.bgIframe.iframe);
		node = outer;
	}
	node.style.zIndex = 999;
	return node;
}, onDragStart:function (e) {
	dojo.html.clearSelection();
	this.scrollOffset = dojo.html.getScroll().offset;
	this.dragStartPosition = dojo.html.getAbsolutePosition(this.domNode, true);
	this.dragOffset = {y:this.dragStartPosition.y - e.pageY, x:this.dragStartPosition.x - e.pageX};
	this.dragClone = this.createDragNode();
	this.containingBlockPosition = this.domNode.offsetParent ? dojo.html.getAbsolutePosition(this.domNode.offsetParent, true) : {x:0, y:0};
	if (this.constrainToContainer) {
		this.constraints = this.getConstraints();
	}
	with (this.dragClone.style) {
		position = "absolute";
		top = this.dragOffset.y + e.pageY + "px";
		left = this.dragOffset.x + e.pageX + "px";
	}
	dojo.body().appendChild(this.dragClone);
	dojo.event.topic.publish("dragStart", {source:this});
}, getConstraints:function () {
	if (this.constrainingContainer.nodeName.toLowerCase() == "body") {
		var viewport = dojo.html.getViewport();
		var width = viewport.width;
		var height = viewport.height;
		var scroll = dojo.html.getScroll().offset;
		var x = scroll.x;
		var y = scroll.y;
	} else {
		var content = dojo.html.getContentBox(this.constrainingContainer);
		width = content.width;
		height = content.height;
		x = this.containingBlockPosition.x + dojo.html.getPixelValue(this.constrainingContainer, "padding-left", true) + dojo.html.getBorderExtent(this.constrainingContainer, "left");
		y = this.containingBlockPosition.y + dojo.html.getPixelValue(this.constrainingContainer, "padding-top", true) + dojo.html.getBorderExtent(this.constrainingContainer, "top");
	}
	var mb = dojo.html.getMarginBox(this.domNode);
	return {minX:x, minY:y, maxX:x + width - mb.width, maxY:y + height - mb.height};
}, updateDragOffset:function () {
	var scroll = dojo.html.getScroll().offset;
	if (scroll.y != this.scrollOffset.y) {
		var diff = scroll.y - this.scrollOffset.y;
		this.dragOffset.y += diff;
		this.scrollOffset.y = scroll.y;
	}
	if (scroll.x != this.scrollOffset.x) {
		var diff = scroll.x - this.scrollOffset.x;
		this.dragOffset.x += diff;
		this.scrollOffset.x = scroll.x;
	}
}, onDragMove:function (e) {
	this.updateDragOffset();
	var x = this.dragOffset.x + e.pageX;
	var y = this.dragOffset.y + e.pageY;
	if (this.constrainToContainer) {
		if (x < this.constraints.minX) {
			x = this.constraints.minX;
		}
		if (y < this.constraints.minY) {
			y = this.constraints.minY;
		}
		if (x > this.constraints.maxX) {
			x = this.constraints.maxX;
		}
		if (y > this.constraints.maxY) {
			y = this.constraints.maxY;
		}
	}
	this.setAbsolutePosition(x, y);
	dojo.event.topic.publish("dragMove", {source:this});
}, setAbsolutePosition:function (x, y) {
	if (!this.disableY) {
		this.dragClone.style.top = y + "px";
	}
	if (!this.disableX) {
		this.dragClone.style.left = x + "px";
	}
}, onDragEnd:function (e) {
	switch (e.dragStatus) {
	  case "dropSuccess":
		dojo.html.removeNode(this.dragClone);
		this.dragClone = null;
		break;
	  case "dropFailure":
		var startCoords = dojo.html.getAbsolutePosition(this.dragClone, true);
		var endCoords = {left:this.dragStartPosition.x + 1, top:this.dragStartPosition.y + 1};
		var anim = dojo.lfx.slideTo(this.dragClone, endCoords, 300);
		var dragObject = this;
		dojo.event.connect(anim, "onEnd", function (e) {
			dojo.html.removeNode(dragObject.dragClone);
			dragObject.dragClone = null;
		});
		anim.play();
		break;
	}
	dojo.event.topic.publish("dragEnd", {source:this});
}, constrainTo:function (container) {
	this.constrainToContainer = true;
	if (container) {
		this.constrainingContainer = container;
	} else {
		this.constrainingContainer = this.domNode.parentNode;
	}
}}, function (node, type) {
	this.domNode = dojo.byId(node);
	this.type = type;
	this.constrainToContainer = false;
	this.dragSource = null;
	dojo.dnd.DragObject.prototype.register.call(this);
});