我正在尝试扩展颜色选择器(chrome://global/content/bindings/colorpicker.xml)的一些功能,这需要修改颜色属性。到目前为止,我已经设法添加了一些内容,但属性设置器根本没有被覆盖。似乎实现部分中的任何内容都被忽略了
这是我到目前为止所拥有的:
colorpicker_extended.xml
<?xml version="1.0"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
- file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<bindings id="colorpickerBindings"
xmlns="http://www.mozilla.org/xbl"
xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
xmlns:xbl="http://www.mozilla.org/xbl">
<!--
<binding id="colorpicker" extends="chrome://global/content/bindings/general.xml#basecontrol">
-->
<binding id="colorpicker" extends="chrome://global/content/bindings/colorpicker.xml#colorpicker">
<implementation implements="nsIDOMEventListener">
<property name="color">
<getter><![CDATA[
return this.mSelectedCell ? this.mSelectedCell.getAttribute("color") : null;
]]></getter>
<setter><![CDATA[
//allow empty value
//but doesn't work
// if (!val)
// return val;
var uppercaseVal = val.toUpperCase();
// Translate standard HTML color strings:
if (uppercaseVal[0] != "#") {
switch (uppercaseVal) {
case "GREEN":
uppercaseVal = "#008000";
break;
case "LIME":
uppercaseVal = "#00FF00";
break;
case "OLIVE":
uppercaseVal = "#808000";
break;
case "TEAL":
uppercaseVal = "#008080";
break;
case "YELLOW":
uppercaseVal = "#FFFF00";
break;
case "RED":
uppercaseVal = "#FF0000";
break;
case "MAROON":
uppercaseVal = "#800000";
break;
case "PURPLE":
uppercaseVal = "#800080";
break;
case "FUCHSIA":
uppercaseVal = "#FF00FF";
break;
case "NAVY":
uppercaseVal = "#000080";
break;
case "BLUE":
uppercaseVal = "#0000FF";
break;
case "AQUA":
uppercaseVal = "#00FFFF";
break;
case "WHITE":
uppercaseVal = "#FFFFFF";
break;
case "SILVER":
uppercaseVal = "#C0C0C0";
break;
case "GRAY":
uppercaseVal = "#808080";
break;
default: // BLACK
uppercaseVal = "#000000";
break;
}
}
var cells = this.mBox.getElementsByAttribute("color", uppercaseVal);
if (cells.item(0)) {
this.selectCell(cells[0]);
this.hoverCell(this.mSelectedCell);
}
return val;
]]></setter>
</property>
</implementation>
</binding>
<!--
<binding id="colorpicker-button" display="xul:menu" role="xul:colorpicker"
extends="chrome://global/content/bindings/general.xml#basecontrol">
-->
<binding id="colorpicker-button" display="xul:menu" role="xul:colorpicker"
extends="chrome://global/content/bindings/colorpicker.xml#colorpicker-button">
</binding>
<binding id="extended" extends="chrome://global/content/bindings/colorpicker.xml#colorpicker">
<content>
<children/>
<xul:hbox>
<xul:spacer class="colorpickertile" color=""/>
</xul:hbox>
</content>
</binding>
</bindings>
和 colorpicker-extended.css:
colorpicker
{
-moz-binding: url("chrome://myextension/skin/colorpicker-extended.xml#colorpicker");
}
colorpicker[type="button"]
{
-moz-binding: url("chrome://myextension/skin/colorpicker-extended.xml#colorpicker-button");
}
colorpicker > vbox
{
-moz-binding: url("chrome://myextension/skin/colorpicker-extended.xml#extended");
}
.colorpickertile[color=""],
colorpicker[type="button"][color=""] > hbox
{
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAABlBMVEXZ3uX///9HjKIIAAAAHElEQVR42mJgBAIGIIDRDGQIkKkNRWCQuAMgwABFEACBx3mMOgAAAABJRU5ErkJggg==);
}
表格中添加了一种新的“透明”颜色,选择它可以工作,按钮也显示正确的“透明”背景,但是当颜色表打开时,透明颜色没有预先选择。
据我所知,我的新“颜色”属性设置器根本没有被使用。
我究竟做错了什么?
谢谢你。