blob: 76582cb5d2b7a5ea85d7d0243205074a271d4326 [file] [log] [blame]
/*
File: FancyToolbar.js
Abstract: JavaScript for the FancyToolbar
Version: 1.0 beta (works with Safari 3 and Firefox only)
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*/
// Helper function to remove a className
Element.prototype.removeStyleClass = function(className)
{
if (this.hasStyleClass(className))
this.className = this.className.replace(className, "");
}
// Helper function to add a className
Element.prototype.addStyleClass = function(className)
{
if (!this.hasStyleClass(className))
this.className += (this.className.length ? " " + className : className);
}
// Helper function to test if a element has a className
Element.prototype.hasStyleClass = function(className)
{
return this.className.indexOf(className) !== -1;
}
// FancyToolbar: constructor function, takes an iframe
function FancyToolbar(iframe)
{
this.setupNeeded = true;
this.editArea = iframe;
// add event listeners to show and hide when the iframe is focused and blurred
var toolbar = this;
// Mozilla sends the blur and focus events on the frame's document object
iframe.contentDocument.addEventListener("focus", function(event) { toolbar.show() }, false);
iframe.contentDocument.addEventListener("blur", function(event) { toolbar.hide() }, false);
// WebKit sends the blur and focus events on the frame's window object
iframe.contentDocument.defaultView.addEventListener("focus", function(event) { toolbar.show() }, false);
iframe.contentDocument.defaultView.addEventListener("blur", function(event) { toolbar.hide() }, false);
}
// FancyToolbar: mouse down event handler
FancyToolbar.prototype.toolbarMouseDown = function(event)
{
this.clickingToolbar = true;
}
// FancyToolbar: mouse up event handler
FancyToolbar.prototype.toolbarMouseUp = function(event)
{
// refocus the editing area
this.editArea.contentDocument.defaultView.focus();
this.clickingToolbar = false;
}
// FancyToolbar: setup and create the DOM elements for the toolbar
FancyToolbar.prototype.setupIfNeeded = function()
{
if (!this.setupNeeded)
return;
delete this.setupNeeded;
this.toolbarElement = document.createElement("div");
this.toolbarPartElements = {};
this.toolbarPartElements.top = document.createElement("div");
this.toolbarPartElements.top.className = "fancy-toolbar-bezel-top";
this.toolbarElement.appendChild(this.toolbarPartElements.top);
this.toolbarPartElements.bottom = document.createElement("div");
this.toolbarPartElements.bottom.className = "fancy-toolbar-bezel-bottom";
this.toolbarElement.appendChild(this.toolbarPartElements.bottom);
this.toolbarPartElements.left = document.createElement("div");
this.toolbarPartElements.left.className = "fancy-toolbar-bezel-left";
this.toolbarElement.appendChild(this.toolbarPartElements.left);
this.toolbarPartElements.right = document.createElement("div");
this.toolbarPartElements.right.className = "fancy-toolbar-bezel-right";
this.toolbarElement.appendChild(this.toolbarPartElements.right);
this.toolbarPartElements.topRight = document.createElement("div");
this.toolbarPartElements.topRight.className = "fancy-toolbar-bezel-top-right";
this.toolbarElement.appendChild(this.toolbarPartElements.topRight);
this.toolbarPartElements.topLeft = document.createElement("div");
this.toolbarPartElements.topLeft.className = "fancy-toolbar-bezel-top-left";
this.toolbarElement.appendChild(this.toolbarPartElements.topLeft);
this.toolbarPartElements.bottomRight = document.createElement("div");
this.toolbarPartElements.bottomRight.className = "fancy-toolbar-bezel-bottom-right";
this.toolbarElement.appendChild(this.toolbarPartElements.bottomRight);
this.toolbarPartElements.bottomLeft = document.createElement("div");
this.toolbarPartElements.bottomLeft.className = "fancy-toolbar-bezel-bottom-left";
this.toolbarElement.appendChild(this.toolbarPartElements.bottomLeft);
var toolbar = this;
this.toolbarElement.addEventListener("mousedown", function(event) { toolbar.toolbarMouseDown(event); }, false);
this.toolbarElement.addEventListener("mouseup", function(event) { toolbar.toolbarMouseUp(event); }, false);
var toolbarArea = document.createElement("div");
toolbarArea.className = "fancy-toolbar-area";
this.boldButton = document.createElement("div");
this.boldButton.appendChild(document.createTextNode("B"));
this.boldButton.className = "fancy-toolbar-button fancy-toolbar-button-bold";
this.boldButton.addEventListener("click", function(event) { toolbar.boldSelection(event); }, false);
toolbarArea.appendChild(this.boldButton);
this.underlineButton = document.createElement("div");
this.underlineButton.appendChild(document.createTextNode("U"));
this.underlineButton.className = "fancy-toolbar-button fancy-toolbar-button-underline";
this.underlineButton.addEventListener("click", function(event) { toolbar.underlineSelection(event); }, false);
toolbarArea.appendChild(this.underlineButton);
this.italicButton = document.createElement("div");
this.italicButton.appendChild(document.createTextNode("I"));
this.italicButton.className = "fancy-toolbar-button fancy-toolbar-button-italic";
this.italicButton.addEventListener("click", function(event) { toolbar.italicSelection(event); }, false);
toolbarArea.appendChild(this.italicButton);
this.textAlignLeftButton = document.createElement("div");
this.textAlignLeftButton.className = "fancy-toolbar-button-segment fancy-toolbar-button-segment-start fancy-toolbar-button-selected";
this.textAlignLeftButton.addEventListener("click", function(event) { toolbar.textAlignLeft(event); }, false);
toolbarArea.appendChild(this.textAlignLeftButton);
var cap = document.createElement("div");
cap.className = "fancy-toolbar-button-segment-cap";
this.textAlignLeftButton.appendChild(cap);
var middle = document.createElement("div");
middle.className = "fancy-toolbar-button-segment-middle";
this.textAlignLeftButton.appendChild(middle);
var align = document.createElement("div");
align.className = "fancy-toolbar-button-text-align fancy-toolbar-button-text-align-left";
middle.appendChild(align);
var divider = document.createElement("div");
divider.className = "fancy-toolbar-button-segment-divider";
this.textAlignLeftButton.appendChild(divider);
this.textAlignCenterButton = document.createElement("div");
this.textAlignCenterButton.className = "fancy-toolbar-button-segment";
this.textAlignCenterButton.addEventListener("click", function(event) { toolbar.textAlignCenter(event); }, false);
toolbarArea.appendChild(this.textAlignCenterButton);
middle = document.createElement("div");
middle.className = "fancy-toolbar-button-segment-middle";
this.textAlignCenterButton.appendChild(middle);
align = document.createElement("div");
align.className = "fancy-toolbar-button-text-align fancy-toolbar-button-text-align-center";
middle.appendChild(align);
divider = document.createElement("div");
divider.className = "fancy-toolbar-button-segment-divider";
this.textAlignCenterButton.appendChild(divider);
this.textAlignJustifyButton = document.createElement("div");
this.textAlignJustifyButton.className = "fancy-toolbar-button-segment";
this.textAlignJustifyButton.addEventListener("click", function(event) { toolbar.textAlignJustify(event); }, false);
toolbarArea.appendChild(this.textAlignJustifyButton);
middle = document.createElement("div");
middle.className = "fancy-toolbar-button-segment-middle";
this.textAlignJustifyButton.appendChild(middle);
align = document.createElement("div");
align.className = "fancy-toolbar-button-text-align fancy-toolbar-button-text-align-justify";
middle.appendChild(align);
divider = document.createElement("div");
divider.className = "fancy-toolbar-button-segment-divider";
this.textAlignJustifyButton.appendChild(divider);
this.textAlignRightButton = document.createElement("div");
this.textAlignRightButton.className = "fancy-toolbar-button-segment fancy-toolbar-button-segment-end";
this.textAlignRightButton.addEventListener("click", function(event) { toolbar.textAlignRight(event); }, false);
toolbarArea.appendChild(this.textAlignRightButton);
middle = document.createElement("div");
middle.className = "fancy-toolbar-button-segment-middle";
this.textAlignRightButton.appendChild(middle);
align = document.createElement("div");
align.className = "fancy-toolbar-button-text-align fancy-toolbar-button-text-align-right";
middle.appendChild(align);
cap = document.createElement("div");
cap.className = "fancy-toolbar-button-segment-cap";
this.textAlignRightButton.appendChild(cap);
this.linkButton = document.createElement("div");
this.linkButton.className = "fancy-toolbar-button fancy-toolbar-button-link";
this.linkButton.addEventListener("click", function(event) { toolbar.linkSelection(event); }, false);
toolbarArea.appendChild(this.linkButton);
var img = document.createElement("img");
img.src = "FancyToolbarImages/link.png";
this.linkButton.appendChild(img);
this.imageButton = document.createElement("div");
this.imageButton.className = "fancy-toolbar-button fancy-toolbar-button-image";
this.imageButton.addEventListener("click", function(event) { toolbar.insertImage(event); }, false);
toolbarArea.appendChild(this.imageButton);
img = document.createElement("img");
img.src = "FancyToolbarImages/camera.png";
this.imageButton.appendChild(img);
this.toolbarElement.appendChild(toolbarArea);
this.toolbarElement.className = "fancy-toolbar-bezel";
// set the opacity to 0 to start with
this.toolbarElement.style.opacity = "0";
}
// FancyToolbar: show the toolbar
FancyToolbar.prototype.show = function()
{
if (this.showing)
return;
this.showing = true;
this.setupIfNeeded();
// add the toolbar element to the body
document.body.insertBefore(this.toolbarElement, document.body.firstChild);
// resize the toolbar element to match the iframe
this.adjustSize();
// add the event listeners we need
this.updateToolbarListener = function(event) { toolbar.updateToolbarButtonStates(toolbar) };
this.windowResizeListener = function(event) { toolbar.windowResize(event) };
this.editArea.contentDocument.addEventListener("mouseup", this.updateToolbarListener, false);
this.editArea.contentDocument.addEventListener("mousemove", this.updateToolbarListener, false);
this.editArea.contentDocument.addEventListener("keypress", this.updateToolbarListener, false);
window.addEventListener("resize", this.windowResizeListener, false);
// start the toolbar fading in
var toolbar = this;
setTimeout(function() { toolbar.animateToolbar(1.0) }, 30);
}
// FancyToolbar: hide the toolbar
FancyToolbar.prototype.hide = function()
{
if (this.clickingToolbar)
return;
this.showing = false;
// start the toolbar fading out
var toolbar = this;
setTimeout(function() { toolbar.animateToolbar(0.0) }, 30);
}
// FancyToolbar: hidden function called when the toolbar fade ends
FancyToolbar.prototype.hidden = function()
{
// remove the event listeners we don't need anymore
this.editArea.contentDocument.removeEventListener("mouseup", this.updateToolbarListener, false);
this.editArea.contentDocument.removeEventListener("mousemove", this.updateToolbarListener, false);
this.editArea.contentDocument.removeEventListener("keypress", this.updateToolbarListener, false);
window.removeEventListener("resize", this.windowResizeListener, false);
// remove the toolbar element
this.toolbarElement.parentNode.removeChild(this.toolbarElement);
}
// FancyToolbar: update the toolbar button states
FancyToolbar.prototype.updateToolbarButtonStates = function()
{
var doc = this.editArea.contentDocument;
// check the Bold state
if (doc.queryCommandState("bold"))
this.boldButton.addStyleClass("fancy-toolbar-button-selected");
else
this.boldButton.removeStyleClass("fancy-toolbar-button-selected");
// check the Underline state
if (doc.queryCommandState("underline"))
this.underlineButton.addStyleClass("fancy-toolbar-button-selected");
else
this.underlineButton.removeStyleClass("fancy-toolbar-button-selected");
// check the Italic state
if (doc.queryCommandState("italic"))
this.italicButton.addStyleClass("fancy-toolbar-button-selected");
else
this.italicButton.removeStyleClass("fancy-toolbar-button-selected");
}
// FancyToolbar: link button event handler
FancyToolbar.prototype.linkSelection = function(event)
{
// prompt the user for a URL
this.clickingToolbar = true;
var value = prompt("Enter link URL:", "http://www.apple.com");
this.clickingToolbar = false;
if (value)
this.editArea.contentDocument.execCommand("createLink", false, value);
}
// FancyToolbar: image button event handler
FancyToolbar.prototype.insertImage = function(event)
{
// prompt the user for a URL
this.clickingToolbar = true;
var value = prompt("Enter image URL:", "images/safari.png");
this.clickingToolbar = false;
if (value)
this.editArea.contentDocument.execCommand("insertImage", false, value);
}
// FancyToolbar: bold button event handler
FancyToolbar.prototype.boldSelection = function(event)
{
this.editArea.contentDocument.execCommand("bold", false, null);
this.updateToolbarButtonStates();
}
// FancyToolbar: underline button event handler
FancyToolbar.prototype.underlineSelection = function(event)
{
this.editArea.contentDocument.execCommand("underline", false, null);
this.updateToolbarButtonStates();
}
// FancyToolbar: italic button event handler
FancyToolbar.prototype.italicSelection = function(event)
{
this.editArea.contentDocument.execCommand("italic", false, null);
this.updateToolbarButtonStates();
}
// FancyToolbar: text align left button event handler
FancyToolbar.prototype.textAlignLeft = function(event)
{
this.editArea.contentDocument.execCommand("justifyLeft", false, null);
// enable the left text align button, disable all other toolbar text align buttons
this.textAlignLeftButton.addStyleClass("fancy-toolbar-button-selected");
this.textAlignCenterButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignJustifyButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignRightButton.removeStyleClass("fancy-toolbar-button-selected");
}
// FancyToolbar: text align center button event handler
FancyToolbar.prototype.textAlignCenter = function(event)
{
this.editArea.contentDocument.execCommand("justifyCenter", false, null);
// enable the center text align button, disable all other toolbar text align buttons
this.textAlignLeftButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignCenterButton.addStyleClass("fancy-toolbar-button-selected");
this.textAlignJustifyButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignRightButton.removeStyleClass("fancy-toolbar-button-selected");
}
// FancyToolbar: text align justify button event handler
FancyToolbar.prototype.textAlignJustify = function(event)
{
this.editArea.contentDocument.execCommand("justifyFull", false, null);
// enable the justify text align button, disable all other toolbar text align buttons
this.textAlignLeftButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignCenterButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignJustifyButton.addStyleClass("fancy-toolbar-button-selected");
this.textAlignRightButton.removeStyleClass("fancy-toolbar-button-selected");
}
// FancyToolbar: text align right button event handler
FancyToolbar.prototype.textAlignRight = function(event)
{
this.editArea.contentDocument.execCommand("justifyRight", false, null);
// enable the right text align button, disable all other toolbar text align buttons
this.textAlignLeftButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignCenterButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignJustifyButton.removeStyleClass("fancy-toolbar-button-selected");
this.textAlignRightButton.addStyleClass("fancy-toolbar-button-selected");
}
// FancyToolbar: adjust the size of the toolbar bezel to match the iframe
FancyToolbar.prototype.adjustSize = function()
{
var toolbarTopHeight = 55;
var toolbarSideWidth = 26;
this.toolbarElement.style.top = (this.editArea.offsetTop - toolbarTopHeight) + "px";
this.toolbarElement.style.left = (this.editArea.offsetLeft - toolbarSideWidth) + "px";
this.toolbarElement.style.width = this.editArea.offsetWidth + (toolbarSideWidth * 2) + "px";
var width = this.editArea.offsetWidth;
var height = this.editArea.offsetHeight;
this.toolbarPartElements.left.style.height = height + "px";
this.toolbarPartElements.right.style.height = height + "px";
var newTop = (height + toolbarTopHeight) + "px";
this.toolbarPartElements.bottom.style.top = newTop;
this.toolbarPartElements.bottomLeft.style.top = newTop;
this.toolbarPartElements.bottomRight.style.top = newTop;
}
// FancyToolbar: window resize event handler
FancyToolbar.prototype.windowResize = function(event)
{
// call the adjustSize function after a delay to make sure the iframe has fully resized
var toolbar = this;
setTimeout(function() { toolbar.adjustSize() }, 0);
}
// FancyToolbar: fade animation function
FancyToolbar.prototype.animateToolbar = function(targetOpacity) {
// increment or decrement the opacity depending on the target opacity
if (this.toolbarElement.style.opacity < targetOpacity)
this.toolbarElement.style.opacity = parseFloat(this.toolbarElement.style.opacity) + 0.1;
else if (this.toolbarElement.style.opacity > targetOpacity)
this.toolbarElement.style.opacity = parseFloat(this.toolbarElement.style.opacity) - 0.1;
if (this.toolbarElement.style.opacity != targetOpacity) {
// the opacity not yet the target opacity, keep animating
var toolbar = this;
setTimeout(function() { toolbar.animateToolbar(targetOpacity) }, 10);
return;
}
// the opacity is now 0, so call the hidden function
if (targetOpacity === 0.0)
this.hidden();
}
window.addEventListener("load", function(event) {
new Image().src = "FancyToolbarImages/button.png";
new Image().src = "FancyToolbarImages/buttonLeft.png";
new Image().src = "FancyToolbarImages/buttonMiddle.png";
new Image().src = "FancyToolbarImages/buttonPressed.png";
new Image().src = "FancyToolbarImages/buttonPressedLeft.png";
new Image().src = "FancyToolbarImages/buttonPressedMiddle.png";
new Image().src = "FancyToolbarImages/buttonPressedRight.png";
new Image().src = "FancyToolbarImages/buttonRight.png";
new Image().src = "FancyToolbarImages/camera.png";
new Image().src = "FancyToolbarImages/link.png";
new Image().src = "FancyToolbarImages/textAlign.png";
new Image().src = "FancyToolbarImages/toolbarOutlineTop.png";
new Image().src = "FancyToolbarImages/toolbarOutlineLeft.png";
new Image().src = "FancyToolbarImages/toolbarOutlineBottom.png";
new Image().src = "FancyToolbarImages/toolbarOutlineRight.png";
new Image().src = "FancyToolbarImages/toolbarOutlineTopLeft.png";
new Image().src = "FancyToolbarImages/toolbarOutlineTopRight.png";
new Image().src = "FancyToolbarImages/toolbarOutlineBottomLeft.png";
new Image().src = "FancyToolbarImages/toolbarOutlineBottomRight.png";
// find all the iframes
var iframes = document.getElementsByTagName("iframe");
for (var i = 0; i < iframes.length; ++i) {
var iframe = iframes[i];
if (!iframe.hasStyleClass("editable") || iframe.fancyToolbar)
continue;
// enable editing and make a new FancyToolbar
iframe.contentDocument.designMode = "on";
iframe.fancyToolbar = new FancyToolbar(iframe);
}
}, false);