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final procedural project

ER authored on 13/04/2012 10:17:34
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public/js/bootstrap-scrollspy.js
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+/* =============================================================
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+ * bootstrap-scrollspy.js v1.4.0
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+ * http://twitter.github.com/bootstrap/javascript.html#scrollspy
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+ * =============================================================
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+ * Copyright 2011 Twitter, Inc.
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+ *
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+ * Licensed under the Apache License, Version 2.0 (the "License");
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+ * you may not use this file except in compliance with the License.
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+ * You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ * ============================================================== */
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+
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+
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+!function ( $ ) {
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+
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+  "use strict"
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+
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+  var $window = $(window)
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+
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+  function ScrollSpy( topbar, selector ) {
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+    var processScroll = $.proxy(this.processScroll, this)
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+    this.$topbar = $(topbar)
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+    this.selector = selector || 'li > a'
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+    this.refresh()
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+    this.$topbar.delegate(this.selector, 'click', processScroll)
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+    $window.scroll(processScroll)
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+    this.processScroll()
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+  }
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+
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+  ScrollSpy.prototype = {
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+
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+      refresh: function () {
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+        this.targets = this.$topbar.find(this.selector).map(function () {
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+          var href = $(this).attr('href')
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+          return /^#\w/.test(href) && $(href).length ? href : null
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+        })
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+
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+        this.offsets = $.map(this.targets, function (id) {
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+          return $(id).offset().top
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+        })
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+      }
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+
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+    , processScroll: function () {
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+        var scrollTop = $window.scrollTop() + 10
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+          , offsets = this.offsets
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+          , targets = this.targets
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+          , activeTarget = this.activeTarget
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+          , i
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+
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+        for (i = offsets.length; i--;) {
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+          activeTarget != targets[i]
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+            && scrollTop >= offsets[i]
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+            && (!offsets[i + 1] || scrollTop <= offsets[i + 1])
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+            && this.activateButton( targets[i] )
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+        }
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+      }
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+
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+    , activateButton: function (target) {
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+        this.activeTarget = target
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+
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+        this.$topbar
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+          .find(this.selector).parent('.active')
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+          .removeClass('active')
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+
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+        this.$topbar
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+          .find(this.selector + '[href="' + target + '"]')
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+          .parent('li')
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+          .addClass('active')
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+      }
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+
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+  }
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+
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+  /* SCROLLSPY PLUGIN DEFINITION
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+   * =========================== */
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+
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+  $.fn.scrollSpy = function( options ) {
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+    var scrollspy = this.data('scrollspy')
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+
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+    if (!scrollspy) {
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+      return this.each(function () {
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+        $(this).data('scrollspy', new ScrollSpy( this, options ))
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+      })
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+    }
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+
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+    if ( options === true ) {
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+      return scrollspy
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+    }
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+
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+    if ( typeof options == 'string' ) {
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+      scrollspy[options]()
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+    }
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+
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+    return this
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+  }
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+
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+  $(document).ready(function () {
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+    $('body').scrollSpy('[data-scrollspy] li > a')
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+  })
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+
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+}( window.jQuery || window.ender );
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