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Code Issues Releases Wiki Activity

Fix problem with dragging partially selected link

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Fixes #841
This commit is contained in:
Jermolene 2014-09-14 10:50:53 +01:00
parent 320e0af68c
commit 2571f534aa
1 changed files with 49 additions and 45 deletions
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94
core/modules/widgets/link.js
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@ -124,56 +124,60 @@ LinkWidget.prototype.handleClickEvent = function (event) {
};
LinkWidget.prototype.handleDragStartEvent = function(event) {
if(this.to) {
// Set the dragging class on the element being dragged
$tw.utils.addClass(event.target,"tc-tiddlylink-dragging");
// Create the drag image elements
this.dragImage = this.document.createElement("div");
this.dragImage.className = "tc-tiddler-dragger";
var inner = this.document.createElement("div");
inner.className = "tc-tiddler-dragger-inner";
inner.appendChild(this.document.createTextNode(this.to));
this.dragImage.appendChild(inner);
this.document.body.appendChild(this.dragImage);
// Astoundingly, we need to cover the dragger up: http://www.kryogenix.org/code/browser/custom-drag-image.html
var cover = this.document.createElement("div");
cover.className = "tc-tiddler-dragger-cover";
cover.style.left = (inner.offsetLeft - 16) + "px";
cover.style.top = (inner.offsetTop - 16) + "px";
cover.style.width = (inner.offsetWidth + 32) + "px";
cover.style.height = (inner.offsetHeight + 32) + "px";
this.dragImage.appendChild(cover);
// Set the data transfer properties
var dataTransfer = event.dataTransfer;
// First the image
dataTransfer.effectAllowed = "copy";
if(dataTransfer.setDragImage) {
dataTransfer.setDragImage(this.dragImage.firstChild,-16,-16);
if(event.target === this.domNodes[0]) {
if(this.to) {
// Set the dragging class on the element being dragged
$tw.utils.addClass(event.target,"tc-tiddlylink-dragging");
// Create the drag image elements
this.dragImage = this.document.createElement("div");
this.dragImage.className = "tc-tiddler-dragger";
var inner = this.document.createElement("div");
inner.className = "tc-tiddler-dragger-inner";
inner.appendChild(this.document.createTextNode(this.to));
this.dragImage.appendChild(inner);
this.document.body.appendChild(this.dragImage);
// Astoundingly, we need to cover the dragger up: http://www.kryogenix.org/code/browser/custom-drag-image.html
var cover = this.document.createElement("div");
cover.className = "tc-tiddler-dragger-cover";
cover.style.left = (inner.offsetLeft - 16) + "px";
cover.style.top = (inner.offsetTop - 16) + "px";
cover.style.width = (inner.offsetWidth + 32) + "px";
cover.style.height = (inner.offsetHeight + 32) + "px";
this.dragImage.appendChild(cover);
// Set the data transfer properties
var dataTransfer = event.dataTransfer;
// First the image
dataTransfer.effectAllowed = "copy";
if(dataTransfer.setDragImage) {
dataTransfer.setDragImage(this.dragImage.firstChild,-16,-16);
}
// Then the data
dataTransfer.clearData();
var jsonData = this.wiki.getTiddlerAsJson(this.to),
textData = this.wiki.getTiddlerText(this.to,"");
// IE doesn't like these content types
if(!$tw.browser.isIE) {
dataTransfer.setData("text/vnd.tiddler",jsonData);
dataTransfer.setData("text/plain",textData);
dataTransfer.setData("text/x-moz-url","data:text/vnd.tiddler," + encodeURI(jsonData));
}
dataTransfer.setData("URL","data:text/vnd.tiddler," + encodeURI(jsonData));
dataTransfer.setData("Text",textData);
event.stopPropagation();
} else {
event.preventDefault();
}
// Then the data
dataTransfer.clearData();
var jsonData = this.wiki.getTiddlerAsJson(this.to),
textData = this.wiki.getTiddlerText(this.to,"");
// IE doesn't like these content types
if(!$tw.browser.isIE) {
dataTransfer.setData("text/vnd.tiddler",jsonData);
dataTransfer.setData("text/plain",textData);
dataTransfer.setData("text/x-moz-url","data:text/vnd.tiddler," + encodeURI(jsonData));
}
dataTransfer.setData("URL","data:text/vnd.tiddler," + encodeURI(jsonData));
dataTransfer.setData("Text",textData);
event.stopPropagation();
} else {
event.preventDefault();
}
};
LinkWidget.prototype.handleDragEndEvent = function(event) {
// Remove the dragging class on the element being dragged
$tw.utils.removeClass(event.target,"tc-tiddlylink-dragging");
// Delete the drag image element
if(this.dragImage) {
this.dragImage.parentNode.removeChild(this.dragImage);
if(event.target === this.domNodes[0]) {
// Remove the dragging class on the element being dragged
$tw.utils.removeClass(event.target,"tc-tiddlylink-dragging");
// Delete the drag image element
if(this.dragImage) {
this.dragImage.parentNode.removeChild(this.dragImage);
}
}
};