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Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Strategy/Paging.js')
| -rw-r--r-- | misc/openlayers/lib/OpenLayers/Strategy/Paging.js | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/misc/openlayers/lib/OpenLayers/Strategy/Paging.js b/misc/openlayers/lib/OpenLayers/Strategy/Paging.js deleted file mode 100644 index 22154fa..0000000 --- a/misc/openlayers/lib/OpenLayers/Strategy/Paging.js +++ /dev/null @@ -1,233 +0,0 @@ -/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for - * full list of contributors). Published under the 2-clause BSD license. - * See license.txt in the OpenLayers distribution or repository for the - * full text of the license. */ - -/** - * @requires OpenLayers/Strategy.js - */ - -/** - * Class: OpenLayers.Strategy.Paging - * Strategy for vector feature paging - * - * Inherits from: - * - <OpenLayers.Strategy> - */ -OpenLayers.Strategy.Paging = OpenLayers.Class(OpenLayers.Strategy, { - - /** - * Property: features - * {Array(<OpenLayers.Feature.Vector>)} Cached features. - */ - features: null, - - /** - * Property: length - * {Integer} Number of features per page. Default is 10. - */ - length: 10, - - /** - * Property: num - * {Integer} The currently displayed page number. - */ - num: null, - - /** - * Property: paging - * {Boolean} The strategy is currently changing pages. - */ - paging: false, - - /** - * Constructor: OpenLayers.Strategy.Paging - * Create a new paging strategy. - * - * Parameters: - * options - {Object} Optional object whose properties will be set on the - * instance. - */ - - /** - * APIMethod: activate - * Activate the strategy. Register any listeners, do appropriate setup. - * - * Returns: - * {Boolean} The strategy was successfully activated. - */ - activate: function() { - var activated = OpenLayers.Strategy.prototype.activate.call(this); - if(activated) { - this.layer.events.on({ - "beforefeaturesadded": this.cacheFeatures, - scope: this - }); - } - return activated; - }, - - /** - * APIMethod: deactivate - * Deactivate the strategy. Unregister any listeners, do appropriate - * tear-down. - * - * Returns: - * {Boolean} The strategy was successfully deactivated. - */ - deactivate: function() { - var deactivated = OpenLayers.Strategy.prototype.deactivate.call(this); - if(deactivated) { - this.clearCache(); - this.layer.events.un({ - "beforefeaturesadded": this.cacheFeatures, - scope: this - }); - } - return deactivated; - }, - - /** - * Method: cacheFeatures - * Cache features before they are added to the layer. - * - * Parameters: - * event - {Object} The event that this was listening for. This will come - * with a batch of features to be paged. - */ - cacheFeatures: function(event) { - if(!this.paging) { - this.clearCache(); - this.features = event.features; - this.pageNext(event); - } - }, - - /** - * Method: clearCache - * Clear out the cached features. This destroys features, assuming - * nothing else has a reference. - */ - clearCache: function() { - if(this.features) { - for(var i=0; i<this.features.length; ++i) { - this.features[i].destroy(); - } - } - this.features = null; - this.num = null; - }, - - /** - * APIMethod: pageCount - * Get the total count of pages given the current cache of features. - * - * Returns: - * {Integer} The page count. - */ - pageCount: function() { - var numFeatures = this.features ? this.features.length : 0; - return Math.ceil(numFeatures / this.length); - }, - - /** - * APIMethod: pageNum - * Get the zero based page number. - * - * Returns: - * {Integer} The current page number being displayed. - */ - pageNum: function() { - return this.num; - }, - - /** - * APIMethod: pageLength - * Gets or sets page length. - * - * Parameters: - * newLength - {Integer} Optional length to be set. - * - * Returns: - * {Integer} The length of a page (number of features per page). - */ - pageLength: function(newLength) { - if(newLength && newLength > 0) { - this.length = newLength; - } - return this.length; - }, - - /** - * APIMethod: pageNext - * Display the next page of features. - * - * Returns: - * {Boolean} A new page was displayed. - */ - pageNext: function(event) { - var changed = false; - if(this.features) { - if(this.num === null) { - this.num = -1; - } - var start = (this.num + 1) * this.length; - changed = this.page(start, event); - } - return changed; - }, - - /** - * APIMethod: pagePrevious - * Display the previous page of features. - * - * Returns: - * {Boolean} A new page was displayed. - */ - pagePrevious: function() { - var changed = false; - if(this.features) { - if(this.num === null) { - this.num = this.pageCount(); - } - var start = (this.num - 1) * this.length; - changed = this.page(start); - } - return changed; - }, - - /** - * Method: page - * Display the page starting at the given index from the cache. - * - * Returns: - * {Boolean} A new page was displayed. - */ - page: function(start, event) { - var changed = false; - if(this.features) { - if(start >= 0 && start < this.features.length) { - var num = Math.floor(start / this.length); - if(num != this.num) { - this.paging = true; - var features = this.features.slice(start, start + this.length); - this.layer.removeFeatures(this.layer.features); - this.num = num; - // modify the event if any - if(event && event.features) { - // this.was called by an event listener - event.features = features; - } else { - // this was called directly on the strategy - this.layer.addFeatures(features); - } - this.paging = false; - changed = true; - } - } - } - return changed; - }, - - CLASS_NAME: "OpenLayers.Strategy.Paging" -}); |