Color Picker Built in a Dialog via JavaScript
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<title>Example of Color Picker Built in a Dialog via JavaScript</title>
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body {
margin:0;
padding:0;
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</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/slider/assets/skins/sam/slider.css" />
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<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/container/assets/skins/sam/container.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/colorpicker/assets/skins/sam/colorpicker.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/connection/connection-min.js"></script>
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<script type="text/javascript" src="yui_2.7.0b-lib/element/element-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/colorpicker/colorpicker-min.js"></script>
<!--begin custom header content for this example-->
<style>
/*style for the server response field*/
#resp { font-family:courier;margin:10px;padding:5px;border:1px solid #ccc;background:#fff;}
#yui-picker-panel {visibility:hidden;}
</style>
<!--end custom header content for this example-->
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<body class=" yui-skin-sam">
<h1>Example of Color Picker Built in a Dialog via JavaScript</h1>
<div class="exampleIntro">
<p>This example explores the implementation of a Color Picker Control within the context of a popup <a href="http://developer.yahoo.com/yui/container/dialog/">Dialog</a>. The control can be called up in the floating Dialog, a color can be chosen, and upon submission of the Color Picker's value the color data is submitted to the server using Dialog's built-in support for <a href="http://developer.yahoo.com/yui/connection/">Connection Manager</a>.</p>
<p>Click the "Show Color Picker" button to get started. Use the other buttons on the configuration dashboard to explore different configurations of the Color Picker Controls. When you submit your color choice, the example uses Connection Manager to echo back <a href="http://developer.yahoo.com/yui/colorpicker/#formdata">the form fields that were passed to the server</a>.</p>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<script type="text/javascript">
//create a namespace object in the example namespace:
YAHOO.namespace("example.colorpicker")
//create a new object for this module:
YAHOO.example.colorpicker.inDialog = function() {
//Some shortcuts to use in our example:
var Event=YAHOO.util.Event,
Dom=YAHOO.util.Dom,
lang=YAHOO.lang;
return {
//In our initialization function, we'll create the dialog;
//in its render event, we'll create our Color Picker instance.
init: function() {
// Instantiate the Dialog
this.dialog = new YAHOO.widget.Dialog("yui-picker-panel", {
width : "500px",
close: true,
fixedcenter : true,
visible : false,
constraintoviewport : true,
buttons : [ { text:"Submit", handler:this.handleSubmit, isDefault:true },
{ text:"Cancel", handler:this.handleCancel } ]
});
// Once the Dialog renders, we want to create our Color Picker
// instance.
this.dialog.renderEvent.subscribe(function() {
if (!this.picker) { //make sure that we haven't already created our Color Picker
YAHOO.log("Instantiating the color picker", "info", "example");
this.picker = new YAHOO.widget.ColorPicker("yui-picker", {
container: this.dialog,
images: {
PICKER_THUMB: "yui_2.7.0b-assets/colorpicker-assets/picker_thumb.png",
HUE_THUMB: "yui_2.7.0b-assets/colorpicker-assets/hue_thumb.png"
}
//Here are some other configurations we could use for our Picker:
//showcontrols: false, // default is true, false hides the entire set of controls
//showhexcontrols: true, // default is false
//showhsvcontrols: true // default is false
});
//listen to rgbChange to be notified about new values
this.picker.on("rgbChange", function(o) {
YAHOO.log(lang.dump(o), "info", "example");
});
}
});
// If we wanted to do form validation on our Dialog, this
// is where we'd do it. Remember to return true if validation
// passes; otherwise, your Dialog's submit method won't submit.
this.dialog.validate = function() {
return true;
};
// Wire up the success and failure handlers
this.dialog.callback = { success: this.handleSuccess, thisfailure: this.handleFailure };
// We're all set up with our Dialog's configurations;
// now, render the Dialog
this.dialog.render();
// We can wrap up initialization by wiring all of the buttons in our
// button dashboard to selectively show and hide parts of the
// Color Picker interface. Remember that "Event" here is an
// alias for YAHOO.util.Event and "Event.on" is therfor a shortcut
// for YAHOO.util.Event.onAvailable -- the standard Dom event attachment
// method:
Event.on("show", "click", this.dialog.show, this.dialog, true);
Event.on("hide", "click", this.dialog.hide, this.dialog, true);
Event.on("btnhsv", "click", function(e) {
var p = this.picker;
p.set(p.OPT.SHOW_HSV_CONTROLS, !p.get(p.OPT.SHOW_HSV_CONTROLS));
}, this.dialog, true);
Event.on("btnhex", "click", function(e) {
var p = this.picker;
p.set(p.OPT.SHOW_HEX_CONTROLS, !p.get(p.OPT.SHOW_HEX_CONTROLS));
}, this.dialog, true);
Event.on("btnrgb", "click", function(e) {
var p = this.picker;
p.set(p.OPT.SHOW_RGB_CONTROLS, !p.get(p.OPT.SHOW_RGB_CONTROLS));
}, this.dialog, true);
Event.on("btnhexsummary", "click", function(e) {
var p = this.picker;
p.set(p.OPT.SHOW_HEX_SUMMARY, !p.get(p.OPT.SHOW_HEX_SUMMARY));
}, this.dialog, true);
//initialization complete:
YAHOO.log("Example initialization complete.", "info", "example");
},
//We'll wire this to our Dialog's submit button:
handleSubmit: function() {
//submit the Dialog:
this.submit();
//log this step to logger:
YAHOO.log("Dialog was submitted.", "info", "example");
},
//If the Dialog's cancel button is clicked,
//this function fires
handleCancel: function() {
//the cancel method automatically hides the Dialog:
this.cancel();
//log this step to logger:
YAHOO.log("Dialog was submitted.", "info", "example");
},
//We'll use Connection Manager to post our form data to the
//server; here, we set up our "success" handler.
handleSuccess: function(o) {
YAHOO.log("Connection Manager returned results to the handleSuccess method.", "info", "example");
var response = o.responseText;
//On Yahoo servers, we may get some page stamping;
//we can trim off the trailing comment:
response = response.split("<!")[0];
//write the response to the page:
response = "<strong>The data received by the server was the following:</strong> " + response;
document.getElementById("resp").innerHTML = response;
},
handleFailure: function(o) {
YAHOO.log("Connection Manager returned results to the handleFailure method.", "error", "example");
YAHOO.log("Response object:" + lang.dump(o), "error", "example");
}
}
}();
//The earliest safe moment to instantiate a Dialog (or any
//Container element is onDOMReady; we'll initialize then:
YAHOO.util.Event.onDOMReady(YAHOO.example.colorpicker.inDialog.init, YAHOO.example.colorpicker.inDialog, true);
</script>
<!--begin Color Picker configuration dashboard: -->
<div>
<button id="show">Show Color Picker</button>
<button id="hide">Hide Color Picker</button>
<button id="btnhsv">Show/hide HSV fields</button>
<button id="btnhex">Show/hide HEX field</button>
<button id="btnrgb">Show/hide RGB field</button>
<button id="btnhexsummary">Show/hide HEX summary info</button>
</div>
<!--begin Dialog markup in standard module format-->
<div id="yui-picker-panel" class="yui-picker-panel">
<div class="hd">Please choose a color:</div>
<div class="bd">
<form name="yui-picker-form" id="yui-picker-form" method="post" action="yui_2.7.0b-assets/colorpicker-assets/post.php">
<div class="yui-picker" id="yui-picker"></div>
</form>
</div>
<div class="ft"></div>
</div>
<!--begin form for server response-->
<div id="resp">Server response will be displayed in this area</div>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
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