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author | 2008-11-13 09:49:11 +0000 | |
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committer | 2008-11-13 09:49:11 +0000 | |
commit | e44a7e37b6c7b5961adaffc62b9042b8d442938e (patch) | |
tree | 95b67c356e93163467db2451f2b8cce84ed5d582 /includes/js/dojo/dnd/TimedMoveable.js | |
parent | a62b9742ee5e28bcec6872d88f50f25b820914f6 (diff) | |
download | scuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.tar.gz scuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.zip |
New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
Diffstat (limited to 'includes/js/dojo/dnd/TimedMoveable.js')
-rw-r--r-- | includes/js/dojo/dnd/TimedMoveable.js | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/includes/js/dojo/dnd/TimedMoveable.js b/includes/js/dojo/dnd/TimedMoveable.js new file mode 100644 index 0000000..4f4fb0b --- /dev/null +++ b/includes/js/dojo/dnd/TimedMoveable.js @@ -0,0 +1,66 @@ +if(!dojo._hasResource["dojo.dnd.TimedMoveable"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo.dnd.TimedMoveable"] = true; +dojo.provide("dojo.dnd.TimedMoveable"); + +dojo.require("dojo.dnd.Moveable"); + +(function(){ + // precalculate long expressions + var oldOnMove = dojo.dnd.Moveable.prototype.onMove; + + dojo.declare("dojo.dnd.TimedMoveable", dojo.dnd.Moveable, { + // summary: + // A specialized version of Moveable to support an FPS throttling. + // This class puts an upper restriction on FPS, which may reduce + // the CPU load. The additional parameter "timeout" regulates + // the delay before actually moving the moveable object. + + // object attributes (for markup) + timeout: 40, // in ms, 40ms corresponds to 25 fps + + constructor: function(node, params){ + // summary: an object, which makes a node moveable with a timer + // node: Node: a node (or node's id) to be moved + // params: Object: an optional object with additional parameters. + // See dojo.dnd.Moveable for details on general parameters. + // Following parameters are specific for this class: + // timeout: Number: delay move by this number of ms + // accumulating position changes during the timeout + + // sanitize parameters + if(!params){ params = {}; } + if(params.timeout && typeof params.timeout == "number" && params.timeout >= 0){ + this.timeout = params.timeout; + } + }, + + // markup methods + markupFactory: function(params, node){ + return new dojo.dnd.TimedMoveable(node, params); + }, + + onMoveStop: function(/* dojo.dnd.Mover */ mover){ + if(mover._timer){ + // stop timer + clearTimeout(mover._timer) + // reflect the last received position + oldOnMove.call(this, mover, mover._leftTop) + } + dojo.dnd.Moveable.prototype.onMoveStop.apply(this, arguments); + }, + onMove: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){ + mover._leftTop = leftTop; + if(!mover._timer){ + var _t = this; // to avoid using dojo.hitch() + mover._timer = setTimeout(function(){ + // we don't have any pending requests + mover._timer = null; + // reflect the last received position + oldOnMove.call(_t, mover, mover._leftTop); + }, this.timeout); + } + } + }); +})(); + +} |