--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/annotator_files/lib/plugin/filter.js	Thu Apr 05 19:37:27 2012 +0200
@@ -0,0 +1,252 @@
+var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
+  __hasProp = Object.prototype.hasOwnProperty,
+  __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor; child.__super__ = parent.prototype; return child; };
+
+Annotator.Plugin.Filter = (function(_super) {
+
+  __extends(Filter, _super);
+
+  Filter.prototype.events = {
+    ".annotator-filter-property input focus": "_onFilterFocus",
+    ".annotator-filter-property input blur": "_onFilterBlur",
+    ".annotator-filter-property input keyup": "_onFilterKeyup",
+    ".annotator-filter-previous click": "_onPreviousClick",
+    ".annotator-filter-next click": "_onNextClick",
+    ".annotator-filter-clear click": "_onClearClick"
+  };
+
+  Filter.prototype.classes = {
+    active: 'annotator-filter-active',
+    hl: {
+      hide: 'annotator-hl-filtered',
+      active: 'annotator-hl-active'
+    }
+  };
+
+  Filter.prototype.html = {
+    element: "<div class=\"annotator-filter\">\n  <strong>" + Annotator._t('Navigate:') + "</strong>\n<span class=\"annotator-filter-navigation\">\n  <button class=\"annotator-filter-previous\">" + Annotator._t('Previous') + "</button>\n<button class=\"annotator-filter-next\">" + Annotator._t('Next') + "</button>\n</span>\n<strong>" + Annotator._t('Filter by:') + "</strong>\n</div>",
+    filter: "<span class=\"annotator-filter-property\">\n  <label></label>\n  <input/>\n  <button class=\"annotator-filter-clear\">" + Annotator._t('Clear') + "</button>\n</span>"
+  };
+
+  Filter.prototype.options = {
+    appendTo: 'body',
+    filters: [],
+    addAnnotationFilter: true,
+    isFiltered: function(input, property) {
+      var keyword, _i, _len, _ref;
+      if (!(input && property)) return false;
+      _ref = input.split(/\s*/);
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        keyword = _ref[_i];
+        if (property.indexOf(keyword) === -1) return false;
+      }
+      return true;
+    }
+  };
+
+  function Filter(element, options) {
+    this._onPreviousClick = __bind(this._onPreviousClick, this);
+    this._onNextClick = __bind(this._onNextClick, this);
+    this._onFilterKeyup = __bind(this._onFilterKeyup, this);
+    this._onFilterBlur = __bind(this._onFilterBlur, this);
+    this._onFilterFocus = __bind(this._onFilterFocus, this);
+    this.updateHighlights = __bind(this.updateHighlights, this);    element = $(this.html.element).appendTo(this.options.appendTo);
+    Filter.__super__.constructor.call(this, element, options);
+    this.filter = $(this.html.filter);
+    this.filters = [];
+    this.current = 0;
+  }
+
+  Filter.prototype.pluginInit = function() {
+    var filter, _i, _len, _ref;
+    _ref = this.options.filters;
+    for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+      filter = _ref[_i];
+      this.addFilter(filter);
+    }
+    this.updateHighlights();
+    this._setupListeners()._insertSpacer();
+    if (this.options.addAnnotationFilter === true) {
+      return this.addFilter({
+        label: Annotator._t('Annotation'),
+        property: 'text'
+      });
+    }
+  };
+
+  Filter.prototype._insertSpacer = function() {
+    var currentMargin, html;
+    html = $('html');
+    currentMargin = parseInt(html.css('padding-top'), 10) || 0;
+    html.css('padding-top', currentMargin + this.element.outerHeight());
+    return this;
+  };
+
+  Filter.prototype._setupListeners = function() {
+    var event, events, _i, _len;
+    events = ['annotationsLoaded', 'annotationCreated', 'annotationUpdated', 'annotationDeleted'];
+    for (_i = 0, _len = events.length; _i < _len; _i++) {
+      event = events[_i];
+      this.annotator.subscribe(event, this.updateHighlights);
+    }
+    return this;
+  };
+
+  Filter.prototype.addFilter = function(options) {
+    var f, filter;
+    filter = $.extend({
+      label: '',
+      property: '',
+      isFiltered: this.options.isFiltered
+    }, options);
+    if (!((function() {
+      var _i, _len, _ref, _results;
+      _ref = this.filters;
+      _results = [];
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        f = _ref[_i];
+        if (f.property === filter.property) _results.push(f);
+      }
+      return _results;
+    }).call(this)).length) {
+      filter.id = 'annotator-filter-' + filter.property;
+      filter.annotations = [];
+      filter.element = this.filter.clone().appendTo(this.element);
+      filter.element.find('label').html(filter.label).attr('for', filter.id);
+      filter.element.find('input').attr({
+        id: filter.id,
+        placeholder: Annotator._t('Filter by ') + filter.label + '\u2026'
+      });
+      filter.element.find('button').hide();
+      filter.element.data('filter', filter);
+      this.filters.push(filter);
+    }
+    return this;
+  };
+
+  Filter.prototype.updateFilter = function(filter) {
+    var annotation, annotations, input, property, _i, _len, _ref;
+    filter.annotations = [];
+    this.updateHighlights();
+    this.resetHighlights();
+    input = $.trim(filter.element.find('input').val());
+    if (input) {
+      annotations = this.highlights.map(function() {
+        return $(this).data('annotation');
+      });
+      _ref = $.makeArray(annotations);
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        annotation = _ref[_i];
+        property = annotation[filter.property];
+        if (filter.isFiltered(input, property)) {
+          filter.annotations.push(annotation);
+        }
+      }
+      return this.filterHighlights();
+    }
+  };
+
+  Filter.prototype.updateHighlights = function() {
+    this.highlights = this.annotator.element.find('.annotator-hl:visible');
+    return this.filtered = this.highlights.not(this.classes.hl.hide);
+  };
+
+  Filter.prototype.filterHighlights = function() {
+    var activeFilters, annotation, annotations, filtered, highlights, index, uniques, _len, _ref;
+    activeFilters = $.grep(this.filters, function(filter) {
+      return !!filter.annotations.length;
+    });
+    filtered = ((_ref = activeFilters[0]) != null ? _ref.annotations : void 0) || [];
+    if (activeFilters.length > 1) {
+      annotations = [];
+      $.each(activeFilters, function() {
+        return $.merge(annotations, this.annotations);
+      });
+      uniques = [];
+      filtered = [];
+      $.each(annotations, function() {
+        if ($.inArray(this, uniques) === -1) {
+          return uniques.push(this);
+        } else {
+          return filtered.push(this);
+        }
+      });
+    }
+    highlights = this.highlights;
+    for (index = 0, _len = filtered.length; index < _len; index++) {
+      annotation = filtered[index];
+      highlights = highlights.not(annotation.highlights);
+    }
+    highlights.addClass(this.classes.hl.hide);
+    this.filtered = this.highlights.not(this.classes.hl.hide);
+    return this;
+  };
+
+  Filter.prototype.resetHighlights = function() {
+    this.highlights.removeClass(this.classes.hl.hide);
+    this.filtered = this.highlights;
+    return this;
+  };
+
+  Filter.prototype._onFilterFocus = function(event) {
+    var input;
+    input = $(event.target);
+    input.parent().addClass(this.classes.active);
+    return input.next('button').show();
+  };
+
+  Filter.prototype._onFilterBlur = function(event) {
+    var input;
+    if (!event.target.value) {
+      input = $(event.target);
+      input.parent().removeClass(this.classes.active);
+      return input.next('button').hide();
+    }
+  };
+
+  Filter.prototype._onFilterKeyup = function(event) {
+    var filter;
+    filter = $(event.target).parent().data('filter');
+    if (filter) return this.updateFilter(filter);
+  };
+
+  Filter.prototype._findNextHighlight = function(previous) {
+    var active, annotation, current, index, next, offset, operator, resetOffset;
+    if (!this.highlights.length) return this;
+    offset = previous ? 0 : -1;
+    resetOffset = previous ? -1 : 0;
+    operator = previous ? 'lt' : 'gt';
+    active = this.highlights.not('.' + this.classes.hl.hide);
+    current = active.filter('.' + this.classes.hl.active);
+    if (!current.length) current = active.eq(offset);
+    annotation = current.data('annotation');
+    index = active.index(current[0]);
+    next = active.filter(":" + operator + "(" + index + ")").not(annotation.highlights).eq(resetOffset);
+    if (!next.length) next = active.eq(resetOffset);
+    return this._scrollToHighlight(next.data('annotation').highlights);
+  };
+
+  Filter.prototype._onNextClick = function(event) {
+    return this._findNextHighlight();
+  };
+
+  Filter.prototype._onPreviousClick = function(event) {
+    return this._findNextHighlight(true);
+  };
+
+  Filter.prototype._scrollToHighlight = function(highlight) {
+    highlight = $(highlight);
+    this.highlights.removeClass(this.classes.hl.active);
+    highlight.addClass(this.classes.hl.active);
+    return $('html, body').animate({
+      scrollTop: highlight.offset().top - (this.element.height() + 20)
+    }, 150);
+  };
+
+  Filter.prototype._onClearClick = function(event) {
+    return $(event.target).prev('input').val('').keyup().blur();
+  };
+
+  return Filter;
+
+})(Annotator.Plugin);