/** @language chinese
* <p>lufylegend.js专用UI，组合框。</p>
* <p>使用时需要引进lufylegend.ui-x.x.x.js文件。</p>
* @class UI:LComboBox
* @constructor
* @extends LSprite
* @param {int} size [可选]组合框文字的大小。
* @param {String} color [可选]组合框文字的颜色。
* @param {String} font [可选]组合框文字的格式。
* @param {LPanel} layer [可选]组合框的背景样式。
* @param {LDisplayObject} layerUp [可选]组合框的按钮抬起状态样式。
* @param {LDisplayObject} layerOver [可选]组合框的按钮抬起状态样式。
* @since 0.1.0
* @examplelink <p><a href="../../../api/ui/LComboBox.html" target="_blank">测试链接</a></p>
* @public
*/
var LComboBox = (function () {
function LComboBox (size, color, font, layerBack, layerUp, layerOver) {
var s = this;
LExtends(s, LSprite, []);
s.type = "LComboBox";
s.list = [];
/** @language chinese
* [只读]组合框的值的索引
* @property selectIndex
* @type String
* @since 0.1.0
* @public
*/
s.selectIndex = -1;
/** @language chinese
* [只读]组合框的值
* @property value
* @type String
* @since 0.1.0
* @public
*/
s.value = null;
s.selectWidth = 100;
if (!size) {
size = 16;
}
if (!color) {
color = "#000000";
}
if (!font) {
font = "Arial";
}
s.size = size;
s.color = color;
s.font = font;
s.maxIndex = 5;
if (!layerBack) {
var back = new LSprite();
back.graphics.drawRoundRect(1, "#999999", [0, 0, 12, 12, 4], true, "#f5f5f9");
var bitBack = new LBitmapData(null, 0, 0, 12, 12, LBitmapData.DATA_CANVAS);
bitBack.draw(back);
layerBack = new LPanel(bitBack, 200, 30, 4, 8, 4, 8);
}
var layer;
if (!layerUp || !layerOver) {
var up, down, data;
grd = LGlobal.canvas.createLinearGradient(0, -20, 0, 40);
grd.addColorStop(0, "#FFFFFF");
grd.addColorStop(1, "#CCCCCC");
up = new LSprite();
up.graphics.drawRoundRect(1, "#CCCCCC", [0, 0, 22, 22, 2], true, grd);
up.graphics.drawVertices(1, "#CCCCCC", [[6, 6], [16, 6], [11, 18]], true, "#008000");
data = new LBitmapData(null, 0, 0, 22, 22, LBitmapData.DATA_CANVAS);
data.draw(up);
layerUp = new LBitmap(data);
down = new LSprite();
down.graphics.drawRoundRect(1, "#CCCCCC", [0, 0, 22, 22, 2], true, grd);
down.graphics.drawVertices(1, "#CCCCCC", [[6, 6], [16, 6], [11, 18]], true, "#32CD32");
data = new LBitmapData(null, 0, 0, 22, 22, LBitmapData.DATA_CANVAS);
data.draw(down);
layerOver = new LBitmap(data);
}
s.minWidth = layerBack.getWidth();
s.minHeight = layerBack.getHeight();
var layer1 = layerBack.clone();
layerUp.x = layer1.getWidth() - layerUp.getWidth() -4;
layerUp.y = 4;
layer1.arraw = layerUp;
layer1.addChild(layerUp);
var layer2 = layerBack.clone();
layerOver.x = layer2.getWidth() - layerOver.getWidth() -4;
layerOver.y = 4;
layer2.arraw = layerOver;
layer2.addChild(layerOver);
layer = new LButton(layer1, layer2);
layer.setCursorEnabled(false);
layer.staticMode = true;
s.addChild(layer);
var label = new LTextField();
label.x = 4;
label.y = 4;
label.text = "";
label.size = s.size;
label.color = s.color;
label.font = s.font;
layer.addChild(label);
s.label = label;
s.layer = layer;
s.addEventListener(LMouseEvent.MOUSE_UP, s._showChildList);
}
/** @language chinese
* 组合框的值改变时调用此事件。
* @event LComboBox.ON_CHANGE
* @since 0.1.0
*/
LComboBox.ON_CHANGE = "onchange";
LComboBox.prototype._ll_resize = function () {
var s = this;
if (s.list.length == 0) {
return;
}
var txt = new LTextField();
txt.text = s.list[0].label;
txt.size = s.size;
var w = txt.getWidth();
var h = txt.getHeight();
if (h + 8 < s.minHeight) {
h = s.minHeight - 8;
s.label.y = (h + 8 - txt.getHeight()) * 0.5;
} else {
s.label.y = 4;
}
if (w + h + 8 < s.minWidth) {
w = s.minWidth - h - 8;
}
var arraw = s.layer.upState.arraw;
arraw.scaleX = 1;
arraw.scaleX = arraw.scaleY = h / arraw.getWidth();
arraw.x = w + 4;
arraw = s.layer.downState.arraw;
arraw.scaleX = 1;
arraw.scaleX = arraw.scaleY = h / arraw.getWidth();
arraw.x = w + 4;
s.layer.upState.resize(w + h + 8, h + 8);
s.layer.downState.resize(w + h + 8, h + 8);
},
/** @language chinese
* 删除元素。
* @method deleteChild
* @param {String} value 删除元素的值。
* @since 0.1.0
* @public
*/
LComboBox.prototype.deleteChild = function (value) {
var s = this, i, l, delIndex = -1;
for (i = 0, l = s.list.length; i < l; i++) {
if (s.list[i].value === value) {
delIndex = i
break;
}
}
if (delIndex == -1) {
return;
}
s.list.splice(delIndex, 1);
if (s.value !== value) {
return;
}
if (s.list.length > 0) {
s.setValue(s.list[delIndex > 0 ? delIndex - 1 : 0]);
} else {
s.selectIndex = -1;
s.value = null;
}
s._ll_resize();
};
/** @language chinese
* 增加元素。
* @method setChild
* @param {String} value 增加元素的值。
* @since 0.1.0
* @public
*/
LComboBox.prototype.setChild = function (child) {
var s = this, i, l;
if (!child || typeof child.value == UNDEFINED || typeof child.label == UNDEFINED) {
throw "the child must be an object like:{label:a,value:b}";
}
for (i = 0, l = s.list.length; i < l; i++) {
if (s.list[i].value === child.value) {
return;
}
}
s.list.push(child);
if (s.list.length == 1) {
s.setValue(child.value);
}
s._ll_resize();
};
LComboBox.prototype._showChildList = function (event) {
var s = event.currentTarget;
s.showChildList();
};
LComboBox.prototype.showChildList = function () {
var s = this, i, l, child, w;
var textLayer = new LSprite();
selectLayer = new LSprite();
textLayer.addChild(selectLayer);
textLayer.selectLayer = selectLayer;
textLayer.childHeight = s.size * 1.5 >>> 0;
for (i = 0, l = s.list.length; i < l; i++) {
child = s.list[i];
var text = new LTextField();
text.size = s.size;
text.color = s.color;
text.font = s.font;
text.text = child.label;
text.x = 5;
text.y = 5 + textLayer.childHeight * i;
textLayer.addChild(text);
}
w = textLayer.getWidth();
if (w < 196) {
w = 196;
}
textLayer.graphics.drawRect(1, "#999999", [0, 0, w + 4, textLayer.childHeight * s.list.length + 4], true, "#f5f5f9");
selectLayer.graphics.drawRect(0, "#CCCCCC", [2, 2, w, textLayer.childHeight], true, "#CCCCCC");
selectLayer.y = textLayer.childHeight * s.selectIndex;
var coordinate = s.getRootCoordinate();
textLayer.comboBox = s;
var translucent = new LSprite();
translucent.graphics.drawRect(0, "#000000", [0, 0, LGlobal.width, LGlobal.height], true, "#000000");
translucent.alpha = 0;
LGlobal.stage.addChild(translucent);
translucent.addEventListener(LMouseEvent.MOUSE_UP, function (e) {
var cnt = LGlobal.stage.numChildren;
LGlobal.stage.removeChildAt(cnt - 1);
LGlobal.stage.removeChildAt(cnt - 2);
});
translucent.addEventListener(LMouseEvent.MOUSE_DOWN, function (e) {});
translucent.addEventListener(LMouseEvent.MOUSE_MOVE, function (e) {});
translucent.addEventListener(LMouseEvent.MOUSE_OVER, function (e) {});
translucent.addEventListener(LMouseEvent.MOUSE_OUT, function (e) {});
if (s.list.length > s.maxIndex) {
var sc = new LScrollbar(textLayer, w, textLayer.childHeight * s.maxIndex, 20, false);
sc.x = coordinate.x;
sc.y = coordinate.y + s.layer.getHeight();
if (sc.y + textLayer.childHeight * s.maxIndex > LGlobal.height) {
sc.y = LGlobal.height - textLayer.childHeight * s.maxIndex;
}
sc.resizeHeight(sc._maskH);
sc._key["down"] = true;
sc._key["up"] = false;
sc._tager = {x : 0, y : 40};
sc._speed = Math.abs(sc._tager.y - sc._showObject.y);
sc.setSpeed();
sc.setScrollY(textLayer.childHeight * s.selectIndex);
LGlobal.stage.addChild(sc);
} else {
textLayer.x = coordinate.x;
textLayer.y = coordinate.y + s.layer.getHeight();
if (textLayer.y + textLayer.getHeight() > LGlobal.height) {
textLayer.y = LGlobal.height - textLayer.getHeight();
}
LGlobal.stage.addChild(textLayer);
}
textLayer.addEventListener(LMouseEvent.MOUSE_MOVE, s._childSelecting);
textLayer.addEventListener(LMouseEvent.MOUSE_UP, s._childSelected);
};
LComboBox.prototype._childSelecting = function (event) {
var textLayer = event.currentTarget, i;
i = event.selfY / textLayer.childHeight >>> 0;
if (i >= textLayer.comboBox.list.length) {
return;
}
textLayer.selectLayer.y = textLayer.childHeight * i;
};
LComboBox.prototype._childSelected = function (event) {
var textLayer = event.currentTarget, i, v;
i = event.selfY / textLayer.childHeight >>> 0;
textLayer.comboBox.setValue(textLayer.comboBox.list[i].value);
var cnt = LGlobal.stage.numChildren;
LGlobal.stage.removeChildAt(cnt - 1);
LGlobal.stage.removeChildAt(cnt - 2);
};
/** @language chinese
* 设置组合框的值。
* @method setValue
* @param {String} value 组合框的值。
* @since 0.1.0
* @public
*/
LComboBox.prototype.setValue = function (value, noEvent) {
var s = this, c, i, l;
if(s.value == value){
return;
}
c = s.list;
for (i = 0, l = c.length; i < l; i++) {
if (c[i].value == value) {
s.selectIndex = i;
s.value = s.list[s.selectIndex].value;
s.label.text = s.list[s.selectIndex].label;
if (!noEvent) {
s.dispatchEvent(LComboBox.ON_CHANGE);
}
break;
}
}
};
LComboBox.prototype.clone = function () {
var s = this, a = new LComboBox(), k, c;
for (k in s.list) {
c = s.list[k];
a.setChild({label : c.label, value : c.value});
}
a.setValue(s.value);
return a;
};
return LComboBox;
})();
