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Add spinner for inserting an entry

Use the WordPress.com jquery.spin.js and ship it
with the plugin in case it's not around.
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1 parent 890df38 commit c0c30852a16b2771078a42400c7ebc23697552fd @nb nb committed Jul 4, 2012
Showing with 411 additions and 0 deletions.
  1. +4 −0 css/liveblog.css
  2. +86 −0 js/jquery.spin.js
  3. +12 −0 js/liveblog-publisher.js
  4. +301 −0 js/spin.js
  5. +8 −0 liveblog.php
View
4 css/liveblog.css
@@ -59,3 +59,7 @@
float: left;
margin: 0 10px 0 0;
}
+
+#liveblog-submit-spinner {
+ margin-left: 16px;
+}
View
86 js/jquery.spin.js
@@ -0,0 +1,86 @@
+/*
+ * Matt Husby https://github.com/matthusby/spin.js
+ * Based on the jquery plugin by Bradley Smith
+ * https://gist.github.com/1290439
+ */
+
+/*
+Add spin to the jQuery object
+If color is not passed the spinner will be black
+You can now create a spinner using any of the variants below:
+$("#el").spin(); // Produces default Spinner
+$("#el").spin("small"); // Produces a 'small' Spinner
+$("#el").spin("large", "white"); // Produces a 'large' Spinner in white (or any valid CSS color).
+$("#el").spin({ ... }); // Produces a Spinner using your custom settings.
+$("#el").spin("small-right"); // Pin the small spinner to the right edge
+$("#el").spin("{small, medium, large}-{left, right, top, bottom}"); // All options for where to pin
+$("#el").spin(false); // Kills the spinner.
+*/
+
+( function( $ ) {
+ $.fn.spin = function( opts, color ) {
+ var presets = {
+ "small": { lines: 8, length: 2, width: 2, radius: 3, trail: 60, speed: 1.3 },
+ "medium": { lines: 8, length: 4, width: 3, radius: 5, trail: 60, speed: 1.3 },
+ "large": { lines: 10, length: 6, width: 4, radius: 7, trail: 60, speed: 1.3 }
+ };
+ if ( Spinner ) {
+ return this.each( function() {
+ var $this = $( this ),
+ data = $this.data();
+
+ if ( data.spinner ) {
+ data.spinner.stop();
+ delete data.spinner;
+ }
+ if ( opts !== false ) {
+ var spinner_options;
+ if ( typeof opts === "string" ) {
+ var spinner_base = opts.indexOf( '-' );
+ if( spinner_base == -1 ) {
+ spinner_base = opts;
+ } else {
+ spinner_base = opts.substring( 0, spinner_base );
+ }
+ if ( spinner_base in presets ) {
+ spinner_options = presets[spinner_base];
+ } else {
+ spinner_options = {};
+ }
+ var padding;
+ if ( opts.indexOf( "-right" ) != -1 ) {
+ padding = jQuery( this ).css( 'padding-left' );
+ if( typeof padding === "undefined" ) {
+ padding = 0;
+ } else {
+ padding = padding.replace( 'px', '' );
+ }
+ spinner_options.left = jQuery( this ).outerWidth() - ( 2 * ( spinner_options.length + spinner_options.width + spinner_options.radius ) ) - padding - 5;
+ }
+ if ( opts.indexOf( '-left' ) != -1 ) {
+ spinner_options.left = 5;
+ }
+ if ( opts.indexOf( '-top' ) != -1 ) {
+ spinner_options.top = 5;
+ }
+ if ( opts.indexOf( '-bottom' ) != -1 ) {
+ padding = jQuery( this ).css( 'padding-top' );
+ if( typeof padding === "undefined" ) {
+ padding = 0;
+ } else {
+ padding = padding.replace( 'px', '' );
+ }
+ spinner_options.top = jQuery( this ).outerHeight() - ( 2 * ( spinner_options.length + spinner_options.width + spinner_options.radius ) ) - padding - 5;
+ }
+ }
+ if( color ){
+ spinner_options.color = color;
+ }
+ data.spinner = new Spinner( spinner_options ).spin( this );
+ }
+ });
+ } else {
+ throw "Spinner class not available.";
+ }
+ };
+})( jQuery );
View
12 js/liveblog-publisher.js
@@ -11,6 +11,7 @@
liveblog.publisher.$entry_text = $( '#liveblog-form-entry' );
liveblog.publisher.$entry_button = $( '#liveblog-form-entry-submit' );
liveblog.publisher.$nonce = $( '#liveblog_nonce' );
+ liveblog.publisher.$spinner = $( '#liveblog-submit-spinner' );
liveblog.publisher.$entry_button.bind( 'click', liveblog.publisher.submit_click );
}
@@ -33,11 +34,13 @@
data[ liveblog_settings.nonce_key ] = liveblog.publisher.$nonce.val();
liveblog.publisher.disable_posting_interface();
+ liveblog.publisher.show_spinner();
liveblog.ajax_request( liveblog_settings.ajaxurl, data, liveblog.publisher.insert_entry_success, liveblog.publisher.insert_entry_error, 'POST' );
}
liveblog.publisher.insert_entry_success = function( data ) {
liveblog.publisher.enable_posting_interface();
+ liveblog.publisher.hide_spinner();
liveblog.publisher.$entry_text.val( '' );
liveblog.reset_timer();
@@ -47,6 +50,7 @@
liveblog.publisher.insert_entry_error = function( data ) {
liveblog.publisher.enable_posting_interface();
+ liveblog.publisher.hide_spinner();
}
liveblog.publisher.disable_posting_interface = function() {
@@ -59,5 +63,13 @@
liveblog.publisher.$entry_text.attr( 'disabled', null );
}
+ liveblog.publisher.show_spinner = function() {
+ liveblog.publisher.$spinner.spin( 'small' );
+ }
+
+ liveblog.publisher.hide_spinner = function() {
+ liveblog.publisher.$spinner.spin( false );
+ }
+
$( document ).ready( liveblog.publisher.init );
} )( jQuery );
View
301 js/spin.js
@@ -0,0 +1,301 @@
+//fgnass.github.com/spin.js#v1.2.4
+(function(window, document, undefined) {
+
+/**
+ * Copyright (c) 2011 Felix Gnass [fgnass at neteye dot de]
+ * Licensed under the MIT license
+ */
+
+ var prefixes = ['webkit', 'Moz', 'ms', 'O']; /* Vendor prefixes */
+ var animations = {}; /* Animation rules keyed by their name */
+ var useCssAnimations;
+
+ /**
+ * Utility function to create elements. If no tag name is given,
+ * a DIV is created. Optionally properties can be passed.
+ */
+ function createEl(tag, prop) {
+ var el = document.createElement(tag || 'div');
+ var n;
+
+ for(n in prop) {
+ el[n] = prop[n];
+ }
+ return el;
+ }
+
+ /**
+ * Appends children and returns the parent.
+ */
+ function ins(parent /* child1, child2, ...*/) {
+ for (var i=1, n=arguments.length; i<n; i++) {
+ parent.appendChild(arguments[i]);
+ }
+ return parent;
+ }
+
+ /**
+ * Insert a new stylesheet to hold the @keyframe or VML rules.
+ */
+ var sheet = function() {
+ var el = createEl('style');
+ ins(document.getElementsByTagName('head')[0], el);
+ return el.sheet || el.styleSheet;
+ }();
+
+ /**
+ * Creates an opacity keyframe animation rule and returns its name.
+ * Since most mobile Webkits have timing issues with animation-delay,
+ * we create separate rules for each line/segment.
+ */
+ function addAnimation(alpha, trail, i, lines) {
+ var name = ['opacity', trail, ~~(alpha*100), i, lines].join('-');
+ var start = 0.01 + i/lines*100;
+ var z = Math.max(1-(1-alpha)/trail*(100-start) , alpha);
+ var prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase();
+ var pre = prefix && '-'+prefix+'-' || '';
+
+ if (!animations[name]) {
+ sheet.insertRule(
+ '@' + pre + 'keyframes ' + name + '{' +
+ '0%{opacity:'+z+'}' +
+ start + '%{opacity:'+ alpha + '}' +
+ (start+0.01) + '%{opacity:1}' +
+ (start+trail)%100 + '%{opacity:'+ alpha + '}' +
+ '100%{opacity:'+ z + '}' +
+ '}', 0);
+ animations[name] = 1;
+ }
+ return name;
+ }
+
+ /**
+ * Tries various vendor prefixes and returns the first supported property.
+ **/
+ function vendor(el, prop) {
+ var s = el.style;
+ var pp;
+ var i;
+
+ if(s[prop] !== undefined) return prop;
+ prop = prop.charAt(0).toUpperCase() + prop.slice(1);
+ for(i=0; i<prefixes.length; i++) {
+ pp = prefixes[i]+prop;
+ if(s[pp] !== undefined) return pp;
+ }
+ }
+
+ /**
+ * Sets multiple style properties at once.
+ */
+ function css(el, prop) {
+ for (var n in prop) {
+ el.style[vendor(el, n)||n] = prop[n];
+ }
+ return el;
+ }
+
+ /**
+ * Fills in default values.
+ */
+ function merge(obj) {
+ for (var i=1; i < arguments.length; i++) {
+ var def = arguments[i];
+ for (var n in def) {
+ if (obj[n] === undefined) obj[n] = def[n];
+ }
+ }
+ return obj;
+ }
+
+ /**
+ * Returns the absolute page-offset of the given element.
+ */
+ function pos(el) {
+ var o = {x:el.offsetLeft, y:el.offsetTop};
+ while((el = el.offsetParent)) {
+ o.x+=el.offsetLeft;
+ o.y+=el.offsetTop;
+ }
+ return o;
+ }
+
+ var defaults = {
+ lines: 12, // The number of lines to draw
+ length: 7, // The length of each line
+ width: 5, // The line thickness
+ radius: 10, // The radius of the inner circle
+ color: '#000', // #rgb or #rrggbb
+ speed: 1, // Rounds per second
+ trail: 100, // Afterglow percentage
+ opacity: 1/4, // Opacity of the lines
+ fps: 20, // Frames per second when using setTimeout()
+ zIndex: 2e9, // Use a high z-index by default
+ className: 'spinner', // CSS class to assign to the element
+ top: 'auto', // center vertically
+ left: 'auto' // center horizontally
+ };
+
+ /** The constructor */
+ var Spinner = function Spinner(o) {
+ if (!this.spin) return new Spinner(o);
+ this.opts = merge(o || {}, Spinner.defaults, defaults);
+ };
+
+ Spinner.defaults = {};
+ Spinner.prototype = {
+ spin: function(target) {
+ this.stop();
+ var self = this;
+ var o = self.opts;
+ var el = self.el = css(createEl(0, {className: o.className}), {position: 'relative', zIndex: o.zIndex});
+ var mid = o.radius+o.length+o.width;
+ var ep; // element position
+ var tp; // target position
+
+ if (target) {
+ target.insertBefore(el, target.firstChild||null);
+ tp = pos(target);
+ ep = pos(el);
+ css(el, {
+ left: (o.left == 'auto' ? tp.x-ep.x + (target.offsetWidth >> 1) : o.left+mid) + 'px',
+ top: (o.top == 'auto' ? tp.y-ep.y + (target.offsetHeight >> 1) : o.top+mid) + 'px'
+ });
+ }
+
+ el.setAttribute('aria-role', 'progressbar');
+ self.lines(el, self.opts);
+
+ if (!useCssAnimations) {
+ // No CSS animation support, use setTimeout() instead
+ var i = 0;
+ var fps = o.fps;
+ var f = fps/o.speed;
+ var ostep = (1-o.opacity)/(f*o.trail / 100);
+ var astep = f/o.lines;
+
+ !function anim() {
+ i++;
+ for (var s=o.lines; s; s--) {
+ var alpha = Math.max(1-(i+s*astep)%f * ostep, o.opacity);
+ self.opacity(el, o.lines-s, alpha, o);
+ }
+ self.timeout = self.el && setTimeout(anim, ~~(1000/fps));
+ }();
+ }
+ return self;
+ },
+ stop: function() {
+ var el = this.el;
+ if (el) {
+ clearTimeout(this.timeout);
+ if (el.parentNode) el.parentNode.removeChild(el);
+ this.el = undefined;
+ }
+ return this;
+ },
+ lines: function(el, o) {
+ var i = 0;
+ var seg;
+
+ function fill(color, shadow) {
+ return css(createEl(), {
+ position: 'absolute',
+ width: (o.length+o.width) + 'px',
+ height: o.width + 'px',
+ background: color,
+ boxShadow: shadow,
+ transformOrigin: 'left',
+ transform: 'rotate(' + ~~(360/o.lines*i) + 'deg) translate(' + o.radius+'px' +',0)',
+ borderRadius: (o.width>>1) + 'px'
+ });
+ }
+ for (; i < o.lines; i++) {
+ seg = css(createEl(), {
+ position: 'absolute',
+ top: 1+~(o.width/2) + 'px',
+ transform: o.hwaccel ? 'translate3d(0,0,0)' : '',
+ opacity: o.opacity,
+ animation: useCssAnimations && addAnimation(o.opacity, o.trail, i, o.lines) + ' ' + 1/o.speed + 's linear infinite'
+ });
+ if (o.shadow) ins(seg, css(fill('#000', '0 0 4px ' + '#000'), {top: 2+'px'}));
+ ins(el, ins(seg, fill(o.color, '0 0 1px rgba(0,0,0,.1)')));
+ }
+ return el;
+ },
+ opacity: function(el, i, val) {
+ if (i < el.childNodes.length) el.childNodes[i].style.opacity = val;
+ }
+ };
+
+ /////////////////////////////////////////////////////////////////////////
+ // VML rendering for IE
+ /////////////////////////////////////////////////////////////////////////
+
+ /**
+ * Check and init VML support
+ */
+ !function() {
+ var s = css(createEl('group'), {behavior: 'url(#default#VML)'});
+ var i;
+
+ if (!vendor(s, 'transform') && s.adj) {
+
+ // VML support detected. Insert CSS rules ...
+ for (i=4; i--;) sheet.addRule(['group', 'roundrect', 'fill', 'stroke'][i], 'behavior:url(#default#VML)');
+
+ Spinner.prototype.lines = function(el, o) {
+ var r = o.length+o.width;
+ var s = 2*r;
+
+ function grp() {
+ return css(createEl('group', {coordsize: s +' '+s, coordorigin: -r +' '+-r}), {width: s, height: s});
+ }
+
+ var margin = -(o.width+o.length)*2+'px';
+ var g = css(grp(), {position: 'absolute', top: margin, left: margin});
+
+ var i;
+
+ function seg(i, dx, filter) {
+ ins(g,
+ ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}),
+ ins(css(createEl('roundrect', {arcsize: 1}), {
+ width: r,
+ height: o.width,
+ left: o.radius,
+ top: -o.width>>1,
+ filter: filter
+ }),
+ createEl('fill', {color: o.color, opacity: o.opacity}),
+ createEl('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change
+ )
+ )
+ );
+ }
+
+ if (o.shadow) {
+ for (i = 1; i <= o.lines; i++) {
+ seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)');
+ }
+ }
+ for (i = 1; i <= o.lines; i++) seg(i);
+ return ins(el, g);
+ };
+ Spinner.prototype.opacity = function(el, i, val, o) {
+ var c = el.firstChild;
+ o = o.shadow && o.lines || 0;
+ if (c && i+o < c.childNodes.length) {
+ c = c.childNodes[i+o]; c = c && c.firstChild; c = c && c.firstChild;
+ if (c) c.opacity = val;
+ }
+ };
+ }
+ else {
+ useCssAnimations = vendor(s, 'animation');
+ }
+ }();
+
+ window.Spinner = Spinner;
+
+})(window, document);
View
8 liveblog.php
@@ -224,6 +224,13 @@ function enqueue_scripts() {
if ( self::current_user_can_edit_liveblog() )
wp_enqueue_script( 'liveblog-publisher', plugins_url( 'js/liveblog-publisher.js', __FILE__ ), array( 'liveblog' ), self::version, true );
+ if ( wp_script_is( 'jquery.spin', 'registered' ) ) {
+ wp_enqueue_script( 'jquery.spin' );
+ } else {
+ wp_enqueue_script( 'spin', plugins_url( 'js/spin.js', __FILE__ ), false, '1.2.4' );
+ wp_enqueue_script( 'jquery.spin', plugins_url( 'js/jquery.spin.js', __FILE__ ), array( 'jquery', 'spin' ) );
+ }
+
$liveblog_settings = apply_filters( 'liveblog_settings', array(
'key' => self::key,
'nonce_key' => self::nonce_key,
@@ -273,6 +280,7 @@ function get_entry_editor_output() {
$editor_output = '';
$editor_output .= '<textarea id="liveblog-form-entry" name="liveblog-form-entry"></textarea>';
$editor_output .= '<input type="button" id="liveblog-form-entry-submit" class="button" value="'. esc_attr__( 'Post Update' ) . '" />';
+ $editor_output .= '<span id="liveblog-submit-spinner"></span>';
$editor_output .= wp_nonce_field( self::nonce_key, self::nonce_key, false, false );
return $editor_output;

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