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Simplify installling of mouse handlers in View.

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This commit is contained in:
Jürg Lehni 2011-11-14 13:32:03 +01:00
parent acbebc2aa4
commit c85f0326c3
1 changed files with 31 additions and 35 deletions
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58
src/ui/View.js
View file

@ -161,7 +161,6 @@ var View = this.View = Base.extend(Callback, /** @lends View# */{
if (this._id == null) if (this._id == null)
this._canvas.setAttribute('id', this._id = 'canvas-' + View._id++); this._canvas.setAttribute('id', this._id = 'canvas-' + View._id++);
// Install event handlers // Install event handlers
this._handlers = this._createHandlers();
DomEvent.add(this._canvas, this._handlers); DomEvent.add(this._canvas, this._handlers);
/*#*/ } // options.browser /*#*/ } // options.browser
// Keep track of views internally // Keep track of views internally
@ -196,7 +195,7 @@ var View = this.View = Base.extend(Callback, /** @lends View# */{
this._project.view = null; this._project.view = null;
// Uninstall event handlers again for this view. // Uninstall event handlers again for this view.
DomEvent.remove(this._canvas, this._handlers); DomEvent.remove(this._canvas, this._handlers);
this._canvas = this._project = this._handlers = null; this._canvas = this._project = null;
// Removing all onFrame handlers makes the _onFrameCallback handler stop // Removing all onFrame handlers makes the _onFrameCallback handler stop
// automatically through its uninstall method. // automatically through its uninstall method.
this.detach('frame'); this.detach('frame');
@ -476,6 +475,31 @@ var View = this.View = Base.extend(Callback, /** @lends View# */{
} }
} }
function mousedown(event) {
var view = View._viewsById[DomEvent.getTarget(event).getAttribute('id')];
// Tell the Key class which view should receive keyboard input.
View._focused = view;
curPoint = viewToProject(view, event);
dragging = true;
var update = false;
// TODO: Move this to CanvasView soon!
if (view._eventCounters.mousedown) {
var hit = view._project.hitTest(curPoint, hitOptions);
if (hit && hit.item) {
update = callEvent(hit.item, new MouseEvent('mousedown',
curPoint, hit.item, event), false);
}
}
if (tool = view._scope.tool)
update = tool.onHandleEvent('mousedown', curPoint, event)
|| update;
if (update)
view.draw(true);
}
function mousemove(event) { function mousemove(event) {
var view; var view;
if (!dragging) { if (!dragging) {
@ -569,38 +593,10 @@ var View = this.View = Base.extend(Callback, /** @lends View# */{
} }
return { return {
_createHandlers: function() { _handlers: {
var view = this;
function mousedown(event) {
// Tell the Key class which view should receive keyboard input.
View._focused = view;
curPoint = viewToProject(view, event);
dragging = true;
var update = false;
// TODO: Move this to CanvasView soon!
if (view._eventCounters.mousedown) {
var hit = view._project.hitTest(curPoint, hitOptions);
if (hit && hit.item) {
update = callEvent(hit.item, new MouseEvent('mousedown',
curPoint, hit.item, event), false);
}
}
if (tool = view._scope.tool)
update = tool.onHandleEvent('mousedown', curPoint, event)
|| update;
if (update)
view.draw(true);
}
return {
mousedown: mousedown, mousedown: mousedown,
touchstart: mousedown, touchstart: mousedown,
selectstart: selectstart selectstart: selectstart
};
}, },
statics: { statics: {