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Code Issues Releases Wiki Activity

Fix problem with tracking dragenter/leave events in Firefox

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Fixes #686 (hopefully!)
This commit is contained in:
Jermolene 2017-03-17 14:54:30 +00:00
parent d778bc9a21
commit 39cdaeb34d
1 changed files with 19 additions and 18 deletions
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37
core/modules/widgets/dropzone.js
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@ -50,32 +50,35 @@ DropZoneWidget.prototype.render = function(parent,nextSibling) {
parent.insertBefore(domNode,nextSibling);
this.renderChildren(domNode,null);
this.domNodes.push(domNode);
// Stack of outstanding enter/leave events
this.currentlyEntered = [];
};
DropZoneWidget.prototype.enterDrag = function() {
// Check for this window being the source of the drag
if($tw.dragInProgress) {
return false;
DropZoneWidget.prototype.enterDrag = function(event) {
if(this.currentlyEntered.indexOf(event.target) === -1) {
this.currentlyEntered.push(event.target);
}
// We count enter/leave events
this.dragEnterCount = (this.dragEnterCount || 0) + 1;
// If we're entering for the first time we need to apply highlighting
if(this.dragEnterCount === 1) {
$tw.utils.addClass(this.domNodes[0],"tc-dragover");
}
$tw.utils.addClass(this.domNodes[0],"tc-dragover");
};
DropZoneWidget.prototype.leaveDrag = function() {
// Reduce the enter count
this.dragEnterCount = (this.dragEnterCount || 0) - 1;
DropZoneWidget.prototype.leaveDrag = function(event) {
var pos = this.currentlyEntered.indexOf(event.target);
if(pos !== -1) {
this.currentlyEntered.splice(pos,1);
}
// Remove highlighting if we're leaving externally
if(this.dragEnterCount <= 0) {
if(this.currentlyEntered.length === 0) {
$tw.utils.removeClass(this.domNodes[0],"tc-dragover");
}
};
DropZoneWidget.prototype.handleDragEnterEvent = function(event) {
this.enterDrag();
// Check for this window being the source of the drag
if($tw.dragInProgress) {
return false;
}
this.enterDrag(event);
// Tell the browser that we're ready to handle the drop
event.preventDefault();
// Tell the browser not to ripple the drag up to any parent drop handlers
@ -97,11 +100,11 @@ DropZoneWidget.prototype.handleDragOverEvent = function(event) {
};
DropZoneWidget.prototype.handleDragLeaveEvent = function(event) {
this.leaveDrag();
this.leaveDrag(event);
};
DropZoneWidget.prototype.handleDropEvent = function(event) {
this.leaveDrag();
this.leaveDrag(event);
// Check for being over a TEXTAREA or INPUT
if(["TEXTAREA","INPUT"].indexOf(event.target.tagName) !== -1) {
return false;
@ -112,8 +115,6 @@ DropZoneWidget.prototype.handleDropEvent = function(event) {
}
var self = this,
dataTransfer = event.dataTransfer;
// Reset the enter count
this.dragEnterCount = 0;
// Remove highlighting
$tw.utils.removeClass(this.domNodes[0],"tc-dragover");
// Import any files in the drop