create a mini jquery plugin for sliders on batch manager + async load

git-svn-id: http://piwigo.org/svn/trunk@29249 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/themes/default/js/doubleSlider.js

@@ -0,0 +1,43 @@
+(function($){
+
+/**
+ * OPTIONS:
+ * values {mixed[]}
+ * selected {object} min and max
+ * text {string}
+ */
+$.fn.pwgDoubleSlider = function(options) {
+  var that = this;
+  
+  function onChange(e, ui) {
+    that.find('[data-input=min]').val(options.values[ui.values[0]]);
+    that.find('[data-input=max]').val(options.values[ui.values[1]]);
+
+    that.find('.slider-info').html(sprintf(
+      options.text,
+      options.values[ui.values[0]],
+      options.values[ui.values[1]]
+    ));
+  }
+
+  var slider = this.find('.slider-slider').slider({
+    range: true,
+    min: 0,
+    max: options.values.length - 1,
+    values: [
+      options.values.indexOf(options.selected.min),
+      options.values.indexOf(options.selected.max)
+    ],
+    slide: onChange,
+    change: onChange
+  });
+
+  this.find('.slider-choice').on('click', function(){
+    slider.slider('values', 0, options.values.indexOf($(this).data('min')));
+    slider.slider('values', 1, options.values.indexOf($(this).data('max')));
+  });
+
+  return this;
+};
+
+}(jQuery));