PC World Komputer 2010 April/PCWorld0410.iso/pluginy Firefox/11587/11587.xpi/chrome/aviary.jar/content/progress.js

JavaScript | 2009-05-26 | 5.8 KB | 231 lines

/* Copyright (c) 2008 Pearl Crescent, LLC.  All Rights Reserved. */
/* vim: set sw=2 sts=2 ts=8 et syntax=javascript: */

function AviaryProgressMeter()
{
  this.init();
}

AviaryProgressMeter.prototype =
{
  mPearlUtil: null,
  mProgressBox: null,
  mName: null,
  mCancelCallback: null,
  mIsCanceling: false,

  init: function()
  {
    this.mPearlUtil = com.aviary.talon.pearlutil;

    var vbox = document.createElement("vbox");
    var label = document.createElement("label");
    var hbox = document.createElement("hbox");
    var progressmeter = document.createElement("progressmeter");
    var btn = document.createElement("toolbarbutton");

    if (vbox && label && hbox && progressmeter && btn)
    {
      const kClassName = "aviary-progressbox";
      vbox.setAttribute("pack", "center");
      vbox.setAttribute("class", kClassName);
      label.setAttribute("crop", "end");
      label.setAttribute("class", "aviary-progresslabel");
      progressmeter.setAttribute("value", "0");
      progressmeter.setAttribute("mode", "undetermined");

      var self = this;
      btn.addEventListener("command", function() { self.Cancel(); }, false);
      var tt = this.mPearlUtil.GetLocalizedString("CANCEL_TOOLTIP");
      btn.setAttribute("tooltiptext", tt);
      btn.setAttribute("hidden", "true");
      btn.setAttribute("class", "toolbarbutton-1 aviary-cancelprogress");

      hbox.setAttribute("align", "center");

      hbox.appendChild(progressmeter);
      hbox.appendChild(btn);
      vbox.appendChild(label);
      vbox.appendChild(hbox);

      // Insert to the right of the Aviary Capture button or, if not found,
      // to the end of the Navigation toolbar.
      var insertBeforeNode;
      var captureBtn = document.getElementById("aviary-captureimageofpage");
      if (captureBtn)
      {
        insertBeforeNode = captureBtn.nextSibling;
        while (insertBeforeNode
               && "vbox" == insertBeforeNode.localName
               && kClassName == insertBeforeNode.getAttribute("class"))
        {
          // Skip past other progress meters.
          insertBeforeNode = insertBeforeNode.nextSibling;
        }
      }

      if (insertBeforeNode)
        insertBeforeNode.parentNode.insertBefore(vbox, insertBeforeNode);
      else
      {
        var navToolbar = document.getElementById("nav-bar");
        if (navToolbar)
          navToolbar.appendChild(vbox);
      }

      if (vbox.parentNode) // Did we add it?
      {
        this.mProgressBox = vbox;
        this.SetIsCancelable(false);
      }
    }
  },

  Cancel: function()
  {
    if (!this.mIsCancelable)
      return;

    var str = this.mPearlUtil.GetLocalizedString("CANCELING");
    this.SetLabel(str);
    this.mIsCanceling = true;

    if (this.mCancelCallback)
      this.mCancelCallback();
  },

  IsCanceled: function()
  {
    return this.mIsCanceling;
  },

  SetCancelFunction: function(aFunc)
  {
    this.mCancelCallback = aFunc;
  },

  SetIsCancelable: function(aIsCancelable)
  {
    this.mIsCancelable = aIsCancelable;

    try
    {
      var cancelBtn = this.mProgressBox.firstChild.nextSibling
                          .firstChild.nextSibling;
      if (aIsCancelable)
        cancelBtn.removeAttribute("hidden");
      else
        cancelBtn.setAttribute("hidden", true);
    }
    catch(e) {}
  },

  SetName: function(aName)
  {
    if (!aName)
      aName = "";

    this.mName = aName;

    if (this.mProgressBox)
      this.mProgressBox.setAttribute("tooltiptext", aName);
  },

  SetLabel: function(aLabel)
  {
    if (!this.mIsCanceling && this.mProgressBox && this.mProgressBox.firstChild)
    {
      if (!aLabel)
        aLabel = "";
      this.mProgressBox.firstChild.setAttribute("value", aLabel);
    }
  },

  SetValue: function(aValue)
  {
    if (this.mProgressBox && this.mProgressBox.firstChild)
    {
      var parent = this.mProgressBox.firstChild.nextSibling;
      var meter = (parent) ? parent.firstChild : null;
      if (meter)
      {
        if (meter.mode == "undetermined")
          meter.mode = "determined";
        meter.setAttribute("value", aValue);
      }
    }
  },

  Close: function(aDoFade, aStringName)
  {
    if (this.mProgressBox)
    {
      if (aDoFade)
      {
        var name = (this.mName) ? this.mName : "";
        var str = name;
        if (aStringName)
        {
          str = this.mPearlUtil
                    .GetFormattedLocalizedString(aStringName, [name], 1);
        }

        this.SetLabel(str);

        var fader = new AviaryElementFader(this.mProgressBox);
      }
      else
        this.mProgressBox.parentNode.removeChild(this.mProgressBox);
    }
  },

  endOfObject: true
}


function AviaryElementFader(aElem)
{
  this.init(aElem);
}

AviaryElementFader.prototype =
{
  kInitialDelayMS: 5000,    // Wait 5 seconds before starting the fade.
  kFadeTimeMS:     3000,    // 3 seconds of fading.
  kFadeIncrement:  0.05,    // Change the opacity this much each time.

  mElem: null,
  mStepDelay: 0,

  init: function(aElem)
  {
    if (!aElem)
      return;

    this.mStepDelay = Math.floor(this.kFadeTimeMS * this.kFadeIncrement);

    this.mElem = aElem;
    this.mElem.style.opacity = 1.0;
    var self = this;
    window.setTimeout(function() {self.fadeStep()}, this.kInitialDelayMS, self);
  },

  fadeStep: function()
  {
    var opacity = parseFloat(this.mElem.style.opacity);
    if (opacity > 0)
    {
      opacity -= this.kFadeIncrement;
      this.mElem.style.opacity = opacity;
      var self = this;
      window.setTimeout(function() {self.fadeStep()}, this.mStepDelay, self);
    }
    else
    {
      this.mElem.parentNode.removeChild(this.mElem);
    }
  },

  endOfObject: true
}