<?xml version="1.0"?>

<bindings id="dialogBindings"
          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="dialog-base">
    <resources>
      <stylesheet src="chrome://global/skin/dialog.css"/>
    </resources>
  </binding>
  
  <binding id="dialog" extends="chrome://global/content/bindings/dialog.xml#dialog-base">
    <content>
      <xul:vbox class="box-inherit dialog-content-box" flex="1">
        <children/>
      </xul:vbox>
          
      <xul:hbox class="dialog-button-box" pack="end" anonid="buttons"
                xbl:inherits="pack=buttonpack,align=buttonalign,dir=buttondir,orient=buttonorient">
        <xul:button dlgtype="accept" class="dialog-button"/>
        <xul:button dlgtype="extra1" class="dialog-button" hidden="true" label=""/>
        <xul:button dlgtype="extra2" class="dialog-button" hidden="true" label=""/>
        <xul:button dlgtype="cancel" class="dialog-button"/>
        <xul:button dlgtype="help" class="dialog-button" hidden="true"/>
        <xul:button dlgtype="disclosure" class="dialog-button" hidden="true"/>
      </xul:hbox>
    </content>

    <implementation>
      <field name="_mStrBundle">null</field>
      <field name="_closeHandler">(function(event) {
        if (!document.documentElement.cancelDialog())
          event.preventDefault();
      })</field>
      <field name="enterDefaultAlways">false</field>

      <property name="buttons"
                onget="return this.getAttribute('buttons');"
                onset="this._configureButtons(val); return val;"/>

      <method name="acceptDialog">
        <body>
        <![CDATA[
          return this._doButtonCommand("accept");
        ]]>
        </body>
      </method>
      
      <method name="cancelDialog">
        <body>
        <![CDATA[
          return this._doButtonCommand("cancel");
        ]]>
        </body>
      </method>
      
      <method name="getButton">
        <parameter name="aDlgType"/>
        <body>
        <![CDATA[
          return this._buttons[aDlgType];
        ]]>
        </body>
      </method>

      <method name="moveToAlertPosition">
        <body>
        <![CDATA[
          // hack. we need this so the window has something like its final size
          if (window.outerWidth == 1) {
            dump("Trying to position a sizeless window; caller should have called sizeToContent() or sizeTo(). See bug 75649.\n");
            sizeToContent();
          }

          var xOffset = (opener.outerWidth - window.outerWidth) / 2;
          var yOffset = opener.outerHeight / 5;

          var newX = opener.screenX + xOffset;
          var newY = opener.screenY + yOffset;

          // ensure the window is fully onscreen (if smaller than the screen)
          if (newX < screen.availLeft)
            newX = screen.availLeft + 20;
          if ((newX + window.outerWidth) > (screen.availLeft + screen.availWidth))
            newX = (screen.availLeft + screen.availWidth) - window.outerWidth - 20;

          if (newY < screen.availTop)
            newY = screen.availTop + 20;
          if ((newY + window.outerHeight) > (screen.availTop + screen.availHeight))
            newY = (screen.availTop + screen.availHeight) - window.outerHeight - 60;

          window.moveTo( newX, newY );
        ]]>
        </body>
      </method>

      <method name="centerWindowOnScreen">
        <body>
        <![CDATA[
          var xOffset = screen.availWidth/2 - window.outerWidth/2;
          var yOffset = screen.availHeight/2 - window.outerHeight/2; //(opener.outerHeight *2)/10;
  
          xOffset = xOffset > 0 ? xOffset : 0;
          yOffset = yOffset > 0 ? yOffset : 0;
          window.moveTo(xOffset, yOffset);
        ]]>
        </body>
      </method>

      <constructor>
      <![CDATA[
        this._configureButtons(this.getAttribute("buttons"));

        // listen for when window is closed via native close buttons
        window.addEventListener("close", this._closeHandler, false);

        // for things that we need to initialize after onload fires
        window.addEventListener("load", this.postLoadInit, false);

        window.moveToAlertPosition = this.moveToAlertPosition;
        window.centerWindowOnScreen = this.centerWindowOnScreen;
      ]]>
      </constructor>

      <method name="postLoadInit">
        <parameter name="aEvent"/>
        <body>
        <![CDATA[
          var focusInit = 
            function() {
              // give focus to the first focusable element in the dialog
              if (!document.commandDispatcher.focusedElement)
                document.commandDispatcher.advanceFocusIntoSubtree(document.documentElement);
            };

          // Give focus after onload completes, see bug 103197.
          setTimeout(focusInit, 0);
        ]]>
        </body>
      </method>                

      <property name="mStrBundle">
        <getter>
        <![CDATA[
          if (!this._mStrBundle) {
            // need to create string bundle manually instead of using <xul:stringbundle/>
            // see bug 63370 for details
            var localeService = Components.classes["@mozilla.org/intl/nslocaleservice;1"]
                                  .getService(Components.interfaces.nsILocaleService);
            var stringBundleService = Components.classes["@mozilla.org/intl/stringbundle;1"]
                                  .getService(Components.interfaces.nsIStringBundleService);
            var bundleURL = "chrome://global/locale/dialog.properties";
            this._mStrBundle = stringBundleService.createBundle(bundleURL, localeService.GetApplicationLocale());
          }
          return this._mStrBundle;
        ]]></getter>
      </property>
      
      <method name="_configureButtons">
        <parameter name="aButtons"/>
        <body>
        <![CDATA[
          // by default, get all the anonymous button elements
          var buttons = {};
          this._buttons = buttons;
          buttons.accept = document.getAnonymousElementByAttribute(this, "dlgtype", "accept");
          buttons.cancel = document.getAnonymousElementByAttribute(this, "dlgtype", "cancel");
          buttons.extra1 = document.getAnonymousElementByAttribute(this, "dlgtype", "extra1");
          buttons.extra2 = document.getAnonymousElementByAttribute(this, "dlgtype", "extra2");
          buttons.help = document.getAnonymousElementByAttribute(this, "dlgtype", "help");
          buttons.disclosure = document.getAnonymousElementByAttribute(this, "dlgtype", "disclosure");

          // look for any overriding explicit button elements
          var exBtns = this.getElementsByAttribute("dlgtype", "*");
          var dlgtype;
          var i;
          for (i = 0; i < exBtns.length; ++i) {
            dlgtype = exBtns[i].getAttribute("dlgtype");
            buttons[dlgtype].hidden = true; // hide the anonymous button
            buttons[dlgtype] = exBtns[i];
          }

          // add the label and oncommand handler to each button
          for (dlgtype in buttons) {
            var button = buttons[dlgtype];
            buttons[dlgtype].addEventListener("command", this._handleButtonCommand, true);
            // don't override custom labels with pre-defined labels on explicit buttons
            if (!button.hasAttribute("label")) {
              button.setAttribute("label", this.mStrBundle.GetStringFromName("button-"+dlgtype));
              var accessKey = this.mStrBundle.GetStringFromName("accesskey-"+dlgtype);
              if (accessKey) {
                button.setAttribute("accesskey", accessKey);
              }
            }
          }
          
          // ensure that hitting enter triggers ondialogaccept
          buttons["accept"].setAttribute("default", "true");
          
          // if there is a special button configuration, use it
          if (aButtons) {
            // expect a comma delimitd list of dlgtype values
            var list = aButtons.split(",");
  
            // mark shown dlgtypes as true
            var shown = { accept: false, cancel: false, help: false,
                          disclosure: false, extra1: false, extra2: false };
            for (i = 0; i < list.length; ++i)
              shown[list[i].replace(/ /g, "")] = true;
            
            // hide/show the buttons we want
            for (dlgtype in shown) {
              if (shown[dlgtype])
                buttons[dlgtype].hidden = false;
              else
                buttons[dlgtype].hidden = true;
            }
          }
        ]]>
        </body>
      </method>
      
      <method name="_handleButtonCommand">
        <parameter name="aEvent"/>
        <body>
        <![CDATA[
          return document.documentElement._doButtonCommand(
                                        aEvent.target.getAttribute("dlgtype"));
        ]]>
        </body>
      </method>
      
      <method name="_doButtonCommand">
        <parameter name="aDlgType"/>
        <body>
        <![CDATA[
          // calling window.close() while an oncommand event
          // call is on the stack fails to close the window, 
          // so we need to do this ugly setTimeout hack
          window.setTimeout(
            function(aDlgType) {
              document.documentElement._reallyDoButtonCommand(aDlgType);
            },
            0, aDlgType);
        ]]>
        </body>
      </method>
      
      <method name="_reallyDoButtonCommand">
        <parameter name="aDlgType"/>
        <body>
        <![CDATA[
          var button = this.getButton(aDlgType);
          if (!button.disabled) {
            var noCancel = this._fireButtonEvent(aDlgType);
            if (noCancel) {
              if (aDlgType == "accept" || aDlgType == "cancel")
                window.close();
            }
            return noCancel;
          }
          return true;
        ]]>
        </body>
      </method>
      
      <method name="_fireButtonEvent">
        <parameter name="aDlgType"/>
        <body>
        <![CDATA[
          var event = document.createEvent("Events");
          event.initEvent("dialog"+aDlgType, false, true);
          
          // handle dom event handlers
          var noCancel = this.dispatchEvent(event);
          
          // handle any xml attribute event handlers
          var handler = this.getAttribute("ondialog"+aDlgType);
          if (handler != "") {
            var fn = new Function("event", handler);
            var returned = fn(event);
            if (returned == false)
              noCancel = false;
          }
          
          return noCancel;
        ]]>
        </body>
      </method>

      <method name="_hitEnter">
        <parameter name="evt"/>
        <body>
        <![CDATA[
          var target = evt.originalTarget;
          if ((target.localName == "textarea")&&(target.namespaceURI == "http://www.w3.org/1999/xhtml")) {
            return;
          }
          // if a button is focused, do nothing, so that activating the button 
          // doesn't cause the dialog to exit
          if (!this.enterDefaultAlways) {
            var focused = document.commandDispatcher.focusedElement;
            if (focused && focused.localName == "button")
              return;
          }

          // only accept dialog if accept button is the default
          var btn = this.getButton("accept");
          if (btn && btn.hasAttribute("default"))
            this.acceptDialog();
        ]]>
        </body>
      </method>

    </implementation>
    
    <handlers>
      <handler event="keypress" keycode="VK_ENTER" action="this._hitEnter(event);"/>
      <handler event="keypress" keycode="VK_RETURN" action="this._hitEnter(event);"/>
      <handler event="keypress" keycode="VK_ESCAPE" action="this.cancelDialog();"/>
    </handlers>

  </binding>

  <binding id="dialogheader" extends="chrome://global/content/bindings/dialog.xml#dialog-base">
    <content>
      <xul:label class="dialogheader-title" xbl:inherits="value=title"/>
      <xul:spacer flex="1"/>
      <xul:label class="dialogheader-description" xbl:inherits="value=description"/>
    </content>
  </binding>

</bindings>
