diff options
Diffstat (limited to 'trunk/etherpad/src/static/js/draggable.js')
-rw-r--r-- | trunk/etherpad/src/static/js/draggable.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/trunk/etherpad/src/static/js/draggable.js b/trunk/etherpad/src/static/js/draggable.js new file mode 100644 index 0000000..97a1a3d --- /dev/null +++ b/trunk/etherpad/src/static/js/draggable.js @@ -0,0 +1,60 @@ +/** + * Copyright 2009 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS-IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +function makeDraggable(jqueryNodes, eventHandler) { + jqueryNodes.each(function() { + var node = $(this); + var state = {}; + var inDrag = false; + function dragStart(evt) { + if (inDrag) { + return; + } + inDrag = true; + if (eventHandler('dragstart', evt, state) !== false) { + $(document).bind('mousemove', dragUpdate); + $(document).bind('mouseup', dragEnd); + } + evt.preventDefault(); + return false; + } + function dragUpdate(evt) { + if (! inDrag) { + return; + } + eventHandler('dragupdate', evt, state); + evt.preventDefault(); + return false; + } + function dragEnd(evt) { + if (! inDrag) { + return; + } + inDrag = false; + try { + eventHandler('dragend', evt, state); + } + finally { + $(document).unbind('mousemove', dragUpdate); + $(document).unbind('mouseup', dragEnd); + evt.preventDefault(); + } + return false; + } + node.bind('mousedown', dragStart); + }); +}
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