325 lines
No EOL
9.9 KiB
JavaScript
325 lines
No EOL
9.9 KiB
JavaScript
'use strict';
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/*
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Load the UI module.
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*/
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Ox.load('UI', function() {
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/*
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Create our own namespace.
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*/
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Ox.My = {};
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/*
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First, lets build the most basic Box widget. A widget is a "constructor"
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function that takes two (optional) arguments, `options` and `self`, and
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returns a widget object. It's not a constructor in JavaScript terms though:
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It doesn't have to be called with `new`, and doesn't return an instance of
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anything. It just enhances another widget object and returns it.
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*/
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Ox.My.Box = function(options, self) {
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/*
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This is how every widget "constructor" begins. `self` is the widget's
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shared private object. It is private since it can only be accessed
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inside the widget, but shared because it can be passed to a widget upon
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its creation.
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*/
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self = self || {};
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/*
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`that` is the widget itself, its public object, or, in JavaScript terms,
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its `this`. Every widget "inherits" from another widget, by simple
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assignment. All public properties of the "super" widget, i.e. all
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properties of its `that`, will be present on our own `that`. In this
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case, we use Ox.Element, the "root" widget at the end of the inheritance
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chain, and pass an empty options object. But we always pass our own
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`self`, which means that any property that Ox.Element (or any other
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widget in the inheritance chain) adds to self will be present on our own
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`self`. Then we call the public `defaults` and `options` methods.
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`defaults` assigns the defaults object to `self.defaults` and copies it
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to `self.options`, then `options` extends `self.options` with the
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options object.
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*/
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var that = Ox.Element({}, self)
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.defaults({
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color: [128, 128, 128],
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size: 128
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})
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.options(options || {})
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.update({
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color: setColor,
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size: setSize
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});
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/*
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Ox.Element, and every widget that inherits from it, has a private
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`self.setOption` method that is invoked whenever, by way of calling the
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public `that.options` method, a property of `self.options` is modified
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or added. If we don't want to react to such changes, we can leave
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`self.setOption` untouched. In this case though, we want to update color
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and size, so we just overwrite `self.setOption`.
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*/
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/*
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The following part of the "constructor" function can be thought of as
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the "initializer", and contains everything needed to set up the
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"instance". In this case, we just define a minimum and maximum size and
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then set the widget's color and size. We could have used `var minSize`
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and `var maxSize` here, but by using `self` for private variables that
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we want to be accessible across all the widget's methods, we can be sure
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that inside such methods, any local `var` is actually local to the
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method. We could have set color and size directly, too, but as we also
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need to set them in `self.setOption`, we create methods for both cases.
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*/
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self.minSize = 128;
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self.maxSize = 384;
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setColor();
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setSize();
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/*
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Now we declare the widget's private methods. These are simple function
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declarations, hoisted to the top of the "constructor".
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*/
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function setColor() {
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/*
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To interact with the DOM, Ox.Element (and any widget derived from
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it) wraps jQuery. If you type `Ox.Element()` in the console, you
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will get something like `[<div class="OxElement"></div>]`, and the
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widget's prototype has all the methods of a `$('<div>')`, with
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proper chaining. If you have `var $d = $('<div>'), $e =
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Ox.Element();`, then `$d.appendTo($e)` returns `$d`, and
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`$e.append($d)` returns `$e`.
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*/
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that.css({
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backgroundColor: 'rgb(' + self.options.color.join(', ') + ')',
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});
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}
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function setSize() {
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/*
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Before setting the size, we make sure the value is between minSize
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and maxSize.
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*/
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self.options.size = Ox.limit(
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self.options.size, self.minSize, self.maxSize
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);
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that.css({
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height: self.options.size + 'px',
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width: self.options.size + 'px'
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});
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}
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/*
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Next, we define the widgets public methods, as properties of `that`.
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(Note that unlike private methods, they are not hoisted.)
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*/
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that.showOptions = function() {
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/*
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As there isn't much to do yet, this method just displays the
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widget's options.
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*/
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that.html(JSON.stringify(self.options).replace(/([,:])/g, '$1 '));
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/*
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Public methods should return `that`, for chaining.
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*/
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return that;
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};
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/*
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At the very end of the "constructor", we always return `that`. And
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that's it.
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*/
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return that;
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};
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/*
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`Ox.My.Box({size: 256}).appendTo(Ox.$body).showOptions()`
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*/
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Ox.My.RoundedBox = function(options, self) {
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self = self || {};
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var that = Ox.My.Box({}, self);
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that.defaults(Ox.extend(that.defaults(), {
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radius: 16
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}))
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.options(options || {})
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.update(function(key, value) {
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if (key == 'radius') {
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setRadius();
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}
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});
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setRadius();
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function setRadius() {
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that.css({
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MozBorderRadius: self.options.radius + 'px',
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OBorderRadius: self.options.radius + 'px',
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WebkitBorderRadius: self.options.radius + 'px'
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});
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}
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return that;
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};
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window.myBox = Ox.My.Box().appendTo(Ox.$body);
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window.myRoundedBox = Ox.My.RoundedBox().appendTo(Ox.$body);
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return;
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Ox.My.Box = function(options, self) {
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self = self || {};
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var that = Ox.Element('<div>', self)
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.defaults({
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color: [128, 128, 128],
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size: 128
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})
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.options(options || {})
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.addClass('OxMyBox OxMonospace')
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.css({
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color: 'white',
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padding: '16px',
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textShadow: '1px 1px 1px black'
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})
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.bindEvent({
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anyclick: focus,
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key_0: reset,
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key_equal: function() {
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Ox.print('+', self.options.size)
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setSize(self.options.size + 16, true);
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},
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key_minus: function() {
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setSize(self.options.size - 16, true);
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}
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});
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self.initialSize = self.options.size;
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self.minSize = 128;
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self.maxSize = 384;
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setColor();
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setSize(self.options.size);
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showOptions();
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function focus(e) {
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Ox.print(e.target);
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if (e.target == that.$element[0]) {
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that.gainFocus();
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}
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}
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function setColor() {
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that.css({
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backgroundColor: 'rgb(' + self.options.color.join(', ') + ')',
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});
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}
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function setSize(size, animate) {
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var css;
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self.options.size = Ox.limit(size, self.minSize, self.maxSize);
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css = {
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height: self.options.size + 'px',
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width: self.options.size + 'px',
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};
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Ox.print('SET SIZE', size, animate, self.minSize, self.maxSize, css)
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if (animate) {
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that.stop().animate(css, 100, showOptions);
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} else {
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that.css(css);
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}
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}
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function showOptions() {
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try {
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that.html(JSON.stringify(self.options).replace(/([,:])/g, '$1 '));
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} catch(e) {}
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}
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function reset() {
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self.options = self.initialOptions;
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showOptions();
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}
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self.setOption = function(key, value) {
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if (key == 'color') {
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setColor();
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} else if (key == 'size') {
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setSize(value);
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}
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showOptions();
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};
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return that;
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};
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Ox.My.RoundedBox = function(options, self) {
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self = self || {};
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var that = Ox.My.Box({}, self);
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that.defaults(Ox.extend(that.defaults(), {
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radius: 16
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}))
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.options(options || {});
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setRadius();
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function setRadius() {
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that.css({
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MozBorderRadius: self.options.radius + 'px',
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OBorderRadius: self.options.radius + 'px',
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WebkitBorderRadius: self.options.radius + 'px'
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});
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}
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self.setSuperOption = self.setOption;
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self.setOption = function(key, value) {
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if (key == 'radius') {
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setRadius();
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} else {
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self.setSuperOption(key, value);
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}
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}
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return that;
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};
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Ox.My.MetaBox = function(options, self) {
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self = self || {};
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Ox.print('MB', options)
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var that = Ox.My.Box({}, self);
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that.defaults(Ox.extend(that.defaults(), {
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boxes: []
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}))
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.options(options || {});
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self.options.boxes.forEach(function(box) {
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that.append(box);
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});
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return that;
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};
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Ox.My.MetaBox({
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boxes: [
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Ox.My.Box({
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color: [64, 128, 255]
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}),
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Ox.My.RoundedBox({
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color: [255, 128, 64]
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})
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],
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size: 384
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})
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.appendTo(Ox.$body);
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}); |