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<?xml version="1.0"?>
<!DOCTYPE bindings [
<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
%globalDTD;
]>
<bindings id="arrowscrollboxBindings"
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="scrollbox-base" extends="chrome://global/content/bindings/general.xml#basecontrol">
<resources>
<stylesheet src="chrome://global/skin/scrollbox.css"/>
</resources>
</binding>
<binding id="scrollbox" extends="chrome://global/content/bindings/scrollbox.xml#scrollbox-base">
<content>
<xul:box class="box-inherit scrollbox-innerbox" xbl:inherits="orient,align,pack,dir" flex="1">
<children/>
</xul:box>
</content>
</binding>
<binding id="arrowscrollbox" extends="chrome://global/content/bindings/scrollbox.xml#scrollbox-base">
<content>
<xul:autorepeatbutton class="autorepeatbutton-up"
anonid="scrollbutton-up"
collapsed="true"
xbl:inherits="orient"
oncommand="scrollByPixels(this.parentNode.scrollIncrement * -1); event.stopPropagation();"/>
<xul:scrollbox xbl:inherits="orient,align,pack,dir" flex="1" anonid="scrollbox">
<children/>
</xul:scrollbox>
<xul:autorepeatbutton class="autorepeatbutton-down"
anonid="scrollbutton-down"
collapsed="true"
xbl:inherits="orient"
oncommand="scrollByPixels(this.parentNode.scrollIncrement); event.stopPropagation();"/>
</content>
<implementation>
<field name="_scrollbox">
document.getAnonymousElementByAttribute(this, "anonid", "scrollbox");
</field>
<field name="_scrollButtonUp">
document.getAnonymousElementByAttribute(this, "anonid", "scrollbutton-up");
</field>
<field name="_scrollButtonDown">
document.getAnonymousElementByAttribute(this, "anonid", "scrollbutton-down");
</field>
<field name="_scrollIncrement">20</field>
<property name="scrollIncrement" readonly="true">
<getter><![CDATA[
if (!this._scrollIncrement) {
var pb2 =
Components.classes['@mozilla.org/preferences-service;1']
.getService(Components.interfaces.nsIPrefBranch2);
try {
this._scrollIncrement = pb2.getIntPref("toolkit.scrollbox.scrollIncrement");
}
catch (ex) {
}
}
return this._scrollIncrement;
]]></getter>
</property>
<field name="_scrollBoxObject">null</field>
<property name="scrollBoxObject" readonly="true">
<getter><![CDATA[
if (!this._scrollBoxObject) {
this._scrollBoxObject =
this._scrollbox.boxObject
.QueryInterface(Components.interfaces.nsIScrollBoxObject);
}
return this._scrollBoxObject;
]]></getter>
</property>
<field name="_isLTRScrollbox">
window.getComputedStyle(this._scrollbox, "").direction == "ltr";
</field>
<method name="ensureElementIsVisible">
<parameter name="aElement"/>
<body><![CDATA[
this.scrollBoxObject.ensureElementIsVisible(aElement);
]]></body>
</method>
<method name="scrollByIndex">
<parameter name="lines"/>
<body><![CDATA[
this.scrollBoxObject.scrollByIndex(lines);
]]></body>
</method>
<method name="scrollByPixels">
<parameter name="px"/>
<body><![CDATA[
if (this.getAttribute("orient") == "horizontal") {
// if not ltr, we want to scroll the other direction
var actualPx = this._isLTRScrollbox ? px : (-1 * px);
this.scrollBoxObject.scrollBy(actualPx, 0);
}
else
this.scrollBoxObject.scrollBy(0, px);
]]></body>
</method>
<method name="_updateScrollButtonsDisabledState">
<body><![CDATA[
var disableUpButton = false;
var disableDownButton = false;
if (this.getAttribute("orient") == "horizontal") {
var width = { };
this.scrollBoxObject.getScrolledSize(width, {});
var xPos = { }
this.scrollBoxObject.getPosition(xPos, {});
if (xPos.value == 0) {
// In the RTL case, this means the _last_ element in the
// scrollbox is visible
if (this._isLTRScrollbox)
disableUpButton = true;
else
disableDownButton = true;
}
else if (this._scrollbox.boxObject.width + xPos.value == width.value) {
// In the RTL case, this means the _first_ element in the
// scrollbox is visible
if (this._isLTRScrollbox)
disableDownButton = true;
else
disableUpButton = true;
}
}
else { // vertical scrollbox
var height = { };
this.scrollBoxObject.getScrolledSize({}, height);
var yPos = { }
this.scrollBoxObject.getPosition({}, yPos);
if (yPos.value == 0)
disableUpButton = true;
else if (this._scrollbox.boxObject.height + yPos.value == height.value)
disableDownButton = true;
}
this._scrollButtonUp.disabled = disableUpButton;
this._scrollButtonDown.disabled = disableDownButton;
var event = document.createEvent("Events");
event.initEvent("UpdatedScrollButtonsDisabledState", true, false);
this.dispatchEvent(event);
]]></body>
</method>
</implementation>
<handlers>
<handler event="DOMMouseScroll" action="this.scrollByIndex(event.detail); event.stopPropagation();"/>
<handler event="underflow"><![CDATA[
// filter underflow events which were dispatched on nested scrollboxes
if (event.target != this)
return;
this._scrollButtonUp.collapsed = true;
this._scrollButtonDown.collapsed = true;
try {
// See bug 341047 and comments in overflow handler as to why
// try..catch is needed here
var childNodes = document.getAnonymousNodes(this._scrollbox);
if (childNodes && childNodes.length) {
if (childNodes.length > 0)
this.ensureElementIsVisible(childNodes[0]);
}
}
catch(e) {
this._scrollButtonUp.collapsed = false;
this._scrollButtonDown.collapsed = false;
}
]]></handler>
<handler event="overflow"><![CDATA[
// filter underflow events which were dispatched on nested scrollboxes
if (event.target != this)
return;
this._scrollButtonUp.collapsed = false;
this._scrollButtonDown.collapsed = false;
try {
// See bug 341047, the overflow event is dispatched when the
// scrollbox already is mostly destroyed. This causes some code in
// _updateScrollButtonsDisabledState() to throw an error. It also
// means that the scrollbarbuttons were uncollapsed when that should
// not be happening, because the whole overflow event should not be
// happening in that case.
this._updateScrollButtonsDisabledState();
}
catch(e) {
this._scrollButtonUp.collapsed = true;
this._scrollButtonDown.collapsed = true;
}
]]></handler>
<handler event="scroll" action="this._updateScrollButtonsDisabledState()"/>
</handlers>
</binding>
<binding id="autorepeatbutton" extends="chrome://global/content/bindings/scrollbox.xml#scrollbox-base">
<content chromedir="&locale.dir;">
<xul:image class="autorepeatbutton-icon"/>
</content>
</binding>
<binding id="arrowscrollbox-clicktoscroll" extends="chrome://global/content/bindings/scrollbox.xml#arrowscrollbox">
<content>
<xul:toolbarbutton class="scrollbutton-up" collapsed="true"
xbl:inherits="orient"
anonid="scrollbutton-up"
onmousedown="_startScroll(-1);"
onmouseup="_stopScroll();"
onmouseout="_stopScroll();"
chromedir="&locale.dir;"/>
<xul:scrollbox xbl:inherits="orient,align,pack,dir" flex="1" anonid="scrollbox">
<children/>
</xul:scrollbox>
<xul:toolbarbutton class="scrollbutton-down" collapsed="true"
xbl:inherits="orient"
anonid="scrollbutton-down"
onmousedown="_startScroll(1);"
onmouseup="_stopScroll();"
onmouseout="_stopScroll();"
chromedir="&locale.dir;"/>
</content>
<implementation implements="nsITimerCallback">
<constructor><![CDATA[
var pb2 =
Components.classes['@mozilla.org/preferences-service;1']
.getService(Components.interfaces.nsIPrefBranch2);
try {
this._scrollDelay = pb2.getIntPref("toolkit.scrollbox.clickToScroll.scrollDelay");
}
catch (ex) {
}
]]></constructor>
<destructor><![CDATA[
// Release timer to avoid reference cycles.
if (this._scrollTimer) {
this._scrollTimer.cancel();
this._scrollTimer = null;
}
]]></destructor>
<field name="_scrollTimer">null</field>
<field name="_scrollLines">0</field>
<field name="_scrollDelay">150</field>
<method name="notify">
<parameter name="aTimer"/>
<body>
<![CDATA[
if (!document)
aTimer.cancel();
this.scrollByIndex(this._scrollLines);
]]>
</body>
</method>
<method name="_setUpScrollTimer">
<body>
<![CDATA[
if (!this._scrollTimer)
this._scrollTimer =
Components.classes["@mozilla.org/timer;1"]
.createInstance(Components.interfaces.nsITimer);
else
this._scrollTimer.cancel();
this._scrollTimer.initWithCallback(this,
this._scrollDelay,
Components.interfaces.nsITimer.TYPE_REPEATING_SLACK);
]]>
</body>
</method>
<method name="_startScroll">
<parameter name="aScrollLines"/>
<body><![CDATA[
this._scrollLines = aScrollLines;
this.scrollByIndex(this._scrollLines);
this._setUpScrollTimer();
]]></body>
</method>
<method name="_stopScroll">
<body><![CDATA[
if (this._scrollTimer)
this._scrollTimer.cancel();
]]></body>
</method>
</implementation>
</binding>
</bindings>
|
