Source canvas gui widgets Button.nas
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gui.widgets.Button = {
new: func(parent, style, cfg)
{
var cfg = Config.new(cfg);
var m = gui.Widget.new(gui.widgets.Button);
m._focus_policy = m.StrongFocus;
m._down = 0;
m._checkable = 0;
m._flat = cfg.get("flat", 0);
if( style != nil and !m._flat )
m._setView( style.createWidget(parent, cfg.get("type", "button"), cfg) );
return m;
},
setText: func(text)
{
if( me._view != nil )
me._view.setText(me, text);
return me;
},
setCheckable: func(checkable)
{
me._checkable = checkable;
return me;
},
setChecked: func(checked = 1)
{
if( !me._checkable or me._down == checked )
return me;
me._trigger("clicked", {checked: checked});
me._trigger("toggled", {checked: checked});
me._down = checked;
me._onStateChange();
return me;
},
setDown: func(down = 1)
{
if( me._checkable or me._down == down )
return me;
me._down = down;
me._onStateChange();
return me;
},
toggle: func
{
if( !me._checkable )
me._trigger("clicked", {checked: 0});
else
me.setChecked(!me._down);
return me;
},
# protected:
_setView: func(view)
{
call(gui.Widget._setView, [view], me);
var el = view._root;
el.addEventListener("mousedown", func if( me._enabled ) me.setDown(1));
el.addEventListener("mouseup", func if( me._enabled ) me.setDown(0));
el.addEventListener("click", func if( me._enabled ) me.toggle());
el.addEventListener("mouseleave",func me.setDown(0));
el.addEventListener("drag", func(e) e.stopPropagation());
}
};