如何用浏览器监听窗口的焦点事件？
通过运行此示例：
<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
<window width="640" height="480"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
onload="">
<script>
<![CDATA[
function onfocus() {
dump("FOCUSED!\n");
}
window.addEventListener("focus", onfocus, false);
]]>
</script>
<browser id="gmail" type="content" src="http://gmail.com/" flex="1" />
<button label="click here to remove the focus from the browser"/>
</window>
..您可以看到，仅当焦点不在上时才会引发窗口的焦点事件。代码>浏览器。我在底部添加了一个按钮，这样您就可以从浏览器中删除焦点，看看我的意思：
- 如果
button获得焦点并且您最小化并恢复窗口，您将看到 focus 事件发生。 - 如果
浏览器获得焦点并且您最小化并恢复窗口，则焦点事件将不会发生。
我需要在浏览器获得焦点时发生此焦点事件，知道如何实现此目标吗？
By running this sample:
<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
<window width="640" height="480"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
onload="">
<script>
<![CDATA[
function onfocus() {
dump("FOCUSED!\n");
}
window.addEventListener("focus", onfocus, false);
]]>
</script>
<browser id="gmail" type="content" src="http://gmail.com/" flex="1" />
<button label="click here to remove the focus from the browser"/>
</window>
..you can see that the window's focus event will be thrown only if the focus is not on the browser. I added a button in the bottom, so you can remove the focus from the browser and see what I mean:
- If the
buttonis focused and you minimize and restore the window, you'll see the focus event occur. - If the
browseris focused and you minimize and restore the window, the focus event will not occur.
I need this focus event to happen when the browser has the focus, any idea how to accomplish this goal?
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尝试改用激活事件。
Try using the activate event instead.