File: options.js

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imagezoom 0.2.7-8
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/* ***** BEGIN LICENSE BLOCK *****

    Copyright (c) 2006  Jason Adams <imagezoom@yellowgorilla.net>

    This file is part of Image Zoom.

    Image Zoom is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    Image Zoom is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Image Zoom; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 * ***** END LICENSE BLOCK ***** */
var gData;

function optionCache () {
	var optionNames = new Array();
	var optionValues = new Array();

	function setOption(optionName, optionValue) {
		for (var i=0; i<optionNames.length; i++){
			if (optionNames[i] == optionName) {
				optionValues[i] = optionValue;
				return;
			}
		}

		optionNames[optionNames.length] = optionName;
		optionValues[optionValues.length] = optionValue;

	}

	optionCache.prototype.getOption = getOption;
	optionCache.prototype.setOption = setOption;
	optionCache.prototype.length = length;

	function getOption(optionName) {

		for (var i=0; i<optionNames.length; i++){
			if (optionNames[i] == optionName) {
				return optionValues[i];
			}
		}

	}

	function length() {
		return optionNames.length;
	}
}

// Context Menu Items and their option equivalents
var MenuItems = new Array("context-zoom-zin","context-zoom-zout","context-zoom-zreset","context-zoom-zcustom","context-zoom-dcustom","context-zoom-fit","zoomsub-zin","zoomsub-zout","zoomsub-zreset","zoomsub-zcustom","zoomsub-dcustom","zoomsub-fit","zoomsub-z400","zoomsub-z200","zoomsub-z150","zoomsub-z125","zoomsub-z100","zoomsub-z75","zoomsub-z50","zoomsub-z25","zoomsub-z10");
var OptionItems = new Array("mmZoomIO","mmZoomIO","mmReset","mmCustomZoom","mmCustomDim","mmFitWindow","smZoomIO","smZoomIO","smReset","smCustomZoom","smCustomDim","smFitWindow","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts","smZoomPcts");
var MenuOptions = new optionCache();

// Preference Service objects
var nsIPrefServiceObj = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);
var nsIPrefBranchObj = nsIPrefServiceObj.getBranch("imagezoom.");

// Initialise function for the options in Mozilla only
function init(){

	try {
		setDisableAllChildren(document.getElementById('mouseoptions'), !document.getElementById("imagezoomusemouseoptions").checked);
	} catch(e) {
		// do nothing
	}

    try {
		for (var i=0;i<MenuItems.length;i++) {
			MenuOptions.setOption(OptionItems[i], nsIPrefBranchObj.getBoolPref(OptionItems[i]));
		}
		setImageZoomMenu();
	} catch(e) {
		// do nothing
	}
}

// Save options for Firefox and Thunderbird
function imagezoom_saveOptions()
{
	if (!validateOptions())
		return false;

	for (var i=0;i<MenuItems.length;i++) {
		if (document.getElementById(MenuItems[i]).tagName.toLowerCase() == "checkbox") {
			nsIPrefBranchObj.setBoolPref(OptionItems[i], MenuOptions.getOption(OptionItems[i]));
		}
	}
    nsIPrefBranchObj.setBoolPref("usescroll", document.getElementById("imagezoomusemouseoptions").checked);
    nsIPrefBranchObj.setIntPref("scrollvalue", document.getElementById("imagezoomscrollvalue").value);

    nsIPrefBranchObj.setIntPref("zoomvalue", document.getElementById("imagezoomzoomvalue").value);
    nsIPrefBranchObj.setBoolPref("autocenter", document.getElementById("imagezoomautocenter").checked);

    nsIPrefBranchObj.setIntPref("triggerbutton", document.getElementById("imagezoommouseaccess").value);
    nsIPrefBranchObj.setIntPref("imagefitbutton", document.getElementById("imagezoomimagefitbutton").value);
    nsIPrefBranchObj.setIntPref("imageresetbutton", document.getElementById("imagezoomimageresetbutton").value);

    nsIPrefBranchObj.setBoolPref("reversescrollzoom", document.getElementById("imagezoomreversescroll").checked);

    nsIPrefBranchObj.setCharPref("defaultGlobalZoom", document.getElementById("imagezoomzoomvalueglobal").value);

    nsIPrefBranchObj.setBoolPref("showViewMenu", document.getElementById("imagezoomshowviewmenu").checked);
}

function validateOptions(){
	if ((document.getElementById("imagezoommouseaccess").value == document.getElementById("imagezoomimagefitbutton").value) ||
		(document.getElementById("imagezoommouseaccess").value == document.getElementById("imagezoomimageresetbutton").value) ||
		((document.getElementById("imagezoomimageresetbutton").value == document.getElementById("imagezoomimagefitbutton").value) && (document.getElementById("imagezoomimagefitbutton").value != 0)))  {
			alert(document.getElementById("bundle_ImageZoom").getString("op_mouse_error"));
			return false;
	}
	return true;
}
// Mozilla calls this function when the options dialog is loaded
function Startup()
{
    init();
}

// Initialise options for Firefox and Thunderbird
function imagezoom_initializeOptions()
{

	document.getElementById("imagezoomusemouseoptions").checked = nsIPrefBranchObj.getBoolPref("usescroll");

    var scroll = nsIPrefBranchObj.getIntPref("scrollvalue");
    var scrollValueBox = document.getElementById("imagezoomscrollvalue");
    scrollValueBox.selectedItem = scrollValueBox.getElementsByAttribute( "value", scroll )[0];

    var scroll = nsIPrefBranchObj.getIntPref("triggerbutton");
    var scrollValueBox = document.getElementById("imagezoommouseaccess");
    scrollValueBox.selectedItem = scrollValueBox.getElementsByAttribute( "value", scroll )[0];

    var scroll = nsIPrefBranchObj.getIntPref("imagefitbutton");
    var scrollValueBox = document.getElementById("imagezoomimagefitbutton");
    scrollValueBox.selectedItem = scrollValueBox.getElementsByAttribute( "value", scroll )[0];

    var scroll = nsIPrefBranchObj.getIntPref("imageresetbutton");
    var scrollValueBox = document.getElementById("imagezoomimageresetbutton");
    scrollValueBox.selectedItem = scrollValueBox.getElementsByAttribute( "value", scroll )[0];

    var zoom = nsIPrefBranchObj.getIntPref("zoomvalue");
    var zoomValueBox = document.getElementById("imagezoomzoomvalue");
    zoomValueBox.selectedItem = zoomValueBox.getElementsByAttribute( "value", zoom )[0];

    var zoom = nsIPrefBranchObj.getCharPref("defaultGlobalZoom");
    var zoomValueBox = document.getElementById("imagezoomzoomvalueglobal");
    zoomValueBox.selectedItem = zoomValueBox.getElementsByAttribute( "value", zoom )[0];

    document.getElementById("imagezoomshowviewmenu").checked = nsIPrefBranchObj.getBoolPref("showViewMenu");
    document.getElementById("imagezoomautocenter").checked = nsIPrefBranchObj.getBoolPref("autocenter");
    document.getElementById("imagezoomreversescroll").checked = nsIPrefBranchObj.getBoolPref("reversescrollzoom");

	for (var i=0;i<MenuItems.length;i++) {
		MenuOptions.setOption(OptionItems[i], nsIPrefBranchObj.getBoolPref(OptionItems[i]));
	}

	setDisableAllChildren(document.getElementById('mouseoptions'), !document.getElementById("imagezoomusemouseoptions").checked);

    setImageZoomMenu();
}

function setImageZoomMenu() {

	// Display the correct menu items depending on options and whether an image was clicked
	for (var i=0;i<MenuItems.length;i++) {
		document.getElementById(MenuItems[i]).setAttribute("checked", MenuOptions.getOption(OptionItems[i]));
	}
	// Show the Zoom Image container if there are subitems visible, else hide
	if (document.getElementById("submenu").getElementsByAttribute("checked", true).length > 0)
		document.getElementById("context-zoomsub").checked = true;
	else
		document.getElementById("context-zoomsub").checked = false;
}

function setPreference(izCheck){
	var i;
	for (i=0;i<MenuItems.length;i++) {
		if (izCheck.id == MenuItems[i])
			break;
	}

	MenuOptions.setOption(OptionItems[i], izCheck.checked);
}
function setOption(izCheck) {
	setPreference(izCheck);
	setImageZoomMenu();
}

function setDisableAllChildren(xulElement, disabled){
	for (var i=0; i < xulElement.childNodes.length; i++){
		xulElement.childNodes[i].disabled = disabled;
		setDisableAllChildren(xulElement.childNodes[i], disabled);
	}
}

function toggleSubMenu() {
	var checkboxes = document.getElementById("submenu").getElementsByTagName("checkbox");
	for (var i=0; i<checkboxes.length; i++){
		checkboxes[i].checked = document.getElementById("context-zoomsub").checked;
		setPreference(checkboxes[i]);
	}
	setImageZoomMenu();
}

function togglePercentages() {
	var pctOption = document.getElementById("zoomsub-z100");
	pctOption.checked = !pctOption.checked;
	setOption(pctOption);
}