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Droppable: Added dragStart and dragStop to ddmanager and call them from draggable to recalculate droppable positions after a drag causes a scroll. Fixes #5003 - Scroll on Droppable Demo Breaks Demo

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This commit is contained in:
kborchers 2011-05-27 12:01:42 -05:00
parent fe4ae30458
commit 67bd872fe1
2 changed files with 18 additions and 0 deletions
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7
ui/jquery.ui.draggable.js vendored
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@ -163,6 +163,10 @@ $.widget("ui.draggable", $.ui.mouse, {
this.helper.addClass("ui-draggable-dragging");
this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
//If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
if ( $.ui.ddmanager ) $.ui.ddmanager.dragStart(this, event);
return true;
},
@ -229,6 +233,9 @@ $.widget("ui.draggable", $.ui.mouse, {
}); //Remove frame helpers
}
//If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
if( $.ui.ddmanager ) $.ui.ddmanager.dragStop(this, event);
return $.ui.mouse.prototype._mouseUp.call(this, event);
},

11
ui/jquery.ui.droppable.js vendored
View File

@ -238,6 +238,12 @@ $.ui.ddmanager = {
return dropped;
},
dragStart: function( draggable, event ) {
//Listen for scrolling so that if the dragging causes scrolling the position of the droppables can be recalculated (see #5003)
draggable.element.parentsUntil( "body" ).bind( "scroll.droppable", function() {
if( !draggable.options.refreshPositions ) $.ui.ddmanager.prepareOffsets( draggable, event );
});
},
drag: function(draggable, event) {
//If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse.
@ -279,6 +285,11 @@ $.ui.ddmanager = {
}
});
},
dragStop: function( draggable, event ) {
draggable.element.parentsUntil( "body" ).unbind( "scroll.droppable" );
//Call prepareOffsets one final time since IE does not fire return scroll events when overflow was caused by drag (see #5003)
if( !draggable.options.refreshPositions ) $.ui.ddmanager.prepareOffsets( draggable, event );
}
};