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@ -5,122 +5,271 @@
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Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
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Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
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Licensed under the MIT @license.
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Licensed under the MIT @license.
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*/
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*/
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(function (factory) {
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(function ($, _, Backbone, Backgrid) {
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// CommonJS
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if (typeof exports == "object") {
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module.exports = factory(require("underscore"),
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require("backbone"),
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require("backgrid"),
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require("backbone-pageable"));
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}
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// Browser
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else if (typeof _ !== "undefined" &&
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typeof Backbone !== "undefined" &&
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typeof Backgrid !== "undefined") {
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factory(_, Backbone, Backgrid);
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}
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}(function (_, Backbone, Backgrid) {
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"use strict";
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"use strict";
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/**
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/**
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Paginator is a Backgrid extension that renders a series of configurable
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PageHandle is a class that renders the actual page handles and reacts to
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pagination handles. This extension is best used for splitting a large data
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click events for pagination.
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set across multiple pages. If the number of pages is larger then a
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threshold, which is set to 10 by default, the page handles are rendered
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This class acts in two modes - control or discrete page handle modes. If
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within a sliding window, plus the fast forward, fast backward, previous and
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one of the `is*` flags is `true`, an instance of this class is under
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next page handles. The fast forward, fast backward, previous and next page
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control page handle mode. Setting a `pageIndex` to an instance of this
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handles can be turned off.
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class under control mode has no effect and the correct page index will
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always be inferred from the `is*` flag. Only one of the `is*` flags should
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@class Backgrid.Extension.Paginator
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be set to `true` at a time. For example, an instance of this class cannot
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simultaneously be a rewind control and a fast forward control. A `label`
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and a `title` template or a string are required to be passed to the
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constuctor under this mode. If a `title` template is provided, it __MUST__
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accept a parameter `label`. When the `label` is provided to the `title`
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template function, its result will be used to render the generated anchor's
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title attribute.
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If all of the `is*` flags is set to `false`, which is the default, an
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instance of this class will be in discrete page handle mode. An instance
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under this mode requires the `pageIndex` to be passed from the constructor
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as an option and it __MUST__ be a 0-based index of the list of page numbers
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to render. The constuctor will normalize the base to the same base the
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underlying PageableCollection collection instance uses. A `label` is not
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required under this mode, which will default to the equivalent 1-based page
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index calculated from `pageIndex` and the underlying PageableCollection
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instance. A provided `label` will still be honored however. The `title`
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parameter is also not required under this mode, in which case the default
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`title` template will be used. You are encouraged to provide your own
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`title` template however if you wish to localize the title strings.
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If this page handle represents the current page, an `active` class will be
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placed on the root list element.
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if this page handle is at the border of the list of pages, a `disabled`
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class will be placed on the root list element.
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Only page handles that are neither `active` nor `disabled` will respond to
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click events and triggers pagination.
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@class Backgrid.Extension.PageHandle
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*/
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*/
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Backgrid.Extension.Paginator = Backbone.View.extend({
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var PageHandle = Backgrid.Extension.PageHandle = Backbone.View.extend({
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/** @property */
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/** @property */
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className: "backgrid-paginator",
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tagName: "li",
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/** @property */
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/** @property */
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windowSize: 10,
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events: {
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"click a": "changePage"
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},
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/**
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/**
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@property {Object} fastForwardHandleLabels You can disable specific
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@property {string|function(Object.<string, string>): string} title
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handles by setting its value to `null`.
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The title to use for the `title` attribute of the generated page handle
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anchor elements. It can be a string or an Underscore template function
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that takes a mandatory `label` parameter.
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*/
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*/
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fastForwardHandleLabels: {
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title: _.template('Page <%- label %>', null, {variable: null}),
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first: "《",
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prev: "〈",
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next: "〉",
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last: "》"
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},
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/** @property */
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/**
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template: _.template('<ul><% _.each(handles, function (handle) { %><li <% if (handle.className) { %>class="<%= handle.className %>"<% } %>><a href="#" <% if (handle.title) {%> title="<%= handle.title %>"<% } %>><%= handle.label %></a></li><% }); %></ul>'),
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@property {boolean} isRewind Whether this handle represents a rewind
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control
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*/
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isRewind: false,
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/** @property */
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/**
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events: {
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@property {boolean} isBack Whether this handle represents a back
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"click a": "changePage"
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control
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},
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*/
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isBack: false,
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/**
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@property {boolean} isForward Whether this handle represents a forward
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control
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*/
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isForward: false,
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/**
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@property {boolean} isFastForward Whether this handle represents a fast
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forward control
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*/
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isFastForward: false,
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/**
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/**
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Initializer.
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Initializer.
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@param {Object} options
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@param {Object} options
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@param {Backbone.Collection} options.collection
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@param {Backbone.Collection} options.collection
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@param {boolean} [options.fastForwardHandleLabels] Whether to render fast forward buttons.
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@param {number} pageIndex 0-based index of the page number this handle
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handles. This parameter will be normalized to the base the underlying
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PageableCollection uses.
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@param {string} [options.label] If provided it is used to render the
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anchor text, otherwise the normalized pageIndex will be used
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instead. Required if any of the `is*` flags is set to `true`.
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@param {string} [options.title]
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@param {boolean} [options.isRewind=false]
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@param {boolean} [options.isBack=false]
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@param {boolean} [options.isForward=false]
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@param {boolean} [options.isFastForward=false]
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*/
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*/
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initialize: function (options) {
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initialize: function (options) {
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Backgrid.requireOptions(options, ["collection"]);
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Backbone.View.prototype.initialize.apply(this, arguments);
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var collection = this.collection;
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var collection = this.collection;
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var fullCollection = collection.fullCollection;
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var state = collection.state;
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if (fullCollection) {
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var currentPage = state.currentPage;
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this.listenTo(fullCollection, "add", this.render);
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var firstPage = state.firstPage;
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this.listenTo(fullCollection, "remove", this.render);
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var lastPage = state.lastPage;
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this.listenTo(fullCollection, "reset", this.render);
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}
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_.extend(this, _.pick(options,
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["isRewind", "isBack", "isForward", "isFastForward"]));
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var pageIndex;
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if (this.isRewind) pageIndex = firstPage;
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else if (this.isBack) pageIndex = Math.max(firstPage, currentPage - 1);
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else if (this.isForward) pageIndex = Math.min(lastPage, currentPage + 1);
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else if (this.isFastForward) pageIndex = lastPage;
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else {
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else {
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this.listenTo(collection, "add", this.render);
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pageIndex = +options.pageIndex;
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this.listenTo(collection, "remove", this.render);
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pageIndex = (firstPage ? pageIndex + 1 : pageIndex);
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this.listenTo(collection, "reset", this.render);
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}
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}
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this.pageIndex = pageIndex;
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if (((this.isRewind || this.isBack) && currentPage == firstPage) ||
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((this.isForward || this.isFastForward) && currentPage == lastPage)) {
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this.$el.addClass("disabled");
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}
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else if (!(this.isRewind ||
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this.isBack ||
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this.isForward ||
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this.isFastForward) &&
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currentPage == pageIndex) {
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this.$el.addClass("active");
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}
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this.label = (options.label || (firstPage ? pageIndex : pageIndex + 1)) + '';
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var title = options.title || this.title;
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this.title = _.isFunction(title) ? title({label: this.label}) : title;
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},
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},
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/**
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/**
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jQuery event handler for the page handlers. Goes to the right page upon
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Renders a clickable anchor element under a list item.
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clicking.
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*/
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render: function () {
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this.$el.empty();
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var anchor = document.createElement("a");
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anchor.href = '#';
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if (this.title) anchor.title = this.title;
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anchor.innerHTML = this.label;
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this.el.appendChild(anchor);
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this.delegateEvents();
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return this;
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},
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@param {Event} e
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/**
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*/
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jQuery click event handler. Goes to the page this PageHandle instance
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represents. No-op if this page handle is currently active or disabled.
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*/
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changePage: function (e) {
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changePage: function (e) {
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e.preventDefault();
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e.preventDefault();
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var $el = this.$el;
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if (!$el.hasClass("active") && !$el.hasClass("disabled")) {
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this.collection.getPage(this.pageIndex);
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}
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return this;
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}
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var $li = $(e.target).parent();
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});
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if (!$li.hasClass("active") && !$li.hasClass("disabled")) {
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/**
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var label = $(e.target).text();
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Paginator is a Backgrid extension that renders a series of configurable
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var ffLabels = this.fastForwardHandleLabels;
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pagination handles. This extension is best used for splitting a large data
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set across multiple pages. If the number of pages is larger then a
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var collection = this.collection;
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threshold, which is set to 10 by default, the page handles are rendered
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within a sliding window, plus the rewind, back, forward and fast forward
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if (ffLabels) {
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control handles. The individual control handles can be turned off.
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switch (label) {
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case ffLabels.first:
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@class Backgrid.Extension.Paginator
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collection.getFirstPage();
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*/
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return;
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Backgrid.Extension.Paginator = Backbone.View.extend({
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case ffLabels.prev:
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collection.getPreviousPage();
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/** @property */
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return;
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className: "backgrid-paginator",
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case ffLabels.next:
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collection.getNextPage();
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/** @property */
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return;
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windowSize: 10,
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case ffLabels.last:
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collection.getLastPage();
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return;
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}
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}
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var state = collection.state;
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/**
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var pageIndex = +label;
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@property {Object.<string, Object.<string, string>>} controls You can
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collection.getPage(state.firstPage === 0 ? pageIndex - 1 : pageIndex);
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disable specific control handles by omitting certain keys.
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*/
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controls: {
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rewind: {
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label: "《",
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title: "First"
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},
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back: {
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label: "〈",
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title: "Previous"
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},
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forward: {
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label: "〉",
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title: "Next"
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},
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fastForward: {
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label: "》",
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title: "Last"
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}
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}
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},
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},
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/**
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/**
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Internal method to create a list of page handle objects for the template
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@property {Backgrid.Extension.PageHandle} pageHandle. The PageHandle
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to render them.
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class to use for rendering individual handles
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*/
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pageHandle: PageHandle,
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@return {Array.<Object>} an array of page handle objects hashes
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|
/** @property */
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|
*/
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goBackFirstOnSort: true,
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|
makeHandles: function () {
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|
/**
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|
Initializer.
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|
@param {Object} options
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|
@param {Backbone.Collection} options.collection
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|
|
@param {boolean} [options.controls]
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|
@param {boolean} [options.pageHandle=Backgrid.Extension.PageHandle]
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|
@param {boolean} [options.goBackFirstOnSort=true]
|
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|
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|
|
|
*/
|
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|
|
initialize: function (options) {
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|
|
this.controls = options.controls || this.controls;
|
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|
|
this.pageHandle = options.pageHandle || this.pageHandle;
|
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|
|
var handles = [];
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|
|
var collection = this.collection;
|
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|
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|
|
this.listenTo(collection, "add", this.render);
|
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|
|
this.listenTo(collection, "remove", this.render);
|
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|
|
this.listenTo(collection, "reset", this.render);
|
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|
|
if ((options.goBackFirstOnSort || this.goBackFirstOnSort) &&
|
|
|
|
|
|
|
|
collection.fullCollection) {
|
|
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|
|
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|
|
this.listenTo(collection.fullCollection, "sort", function () {
|
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|
|
collection.getFirstPage();
|
|
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|
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|
|
});
|
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|
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|
|
}
|
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|
|
|
|
},
|
|
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|
|
|
|
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|
|
|
|
|
|
|
_calculateWindow: function () {
|
|
|
|
var collection = this.collection;
|
|
|
|
var collection = this.collection;
|
|
|
|
var state = collection.state;
|
|
|
|
var state = collection.state;
|
|
|
|
|
|
|
|
|
|
|
|
@ -132,48 +281,44 @@
|
|
|
|
currentPage = firstPage ? currentPage - 1 : currentPage;
|
|
|
|
currentPage = firstPage ? currentPage - 1 : currentPage;
|
|
|
|
var windowStart = Math.floor(currentPage / this.windowSize) * this.windowSize;
|
|
|
|
var windowStart = Math.floor(currentPage / this.windowSize) * this.windowSize;
|
|
|
|
var windowEnd = Math.min(lastPage + 1, windowStart + this.windowSize);
|
|
|
|
var windowEnd = Math.min(lastPage + 1, windowStart + this.windowSize);
|
|
|
|
|
|
|
|
return [windowStart, windowEnd];
|
|
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
if (collection.mode !== "infinite") {
|
|
|
|
/**
|
|
|
|
for (var i = windowStart; i < windowEnd; i++) {
|
|
|
|
Creates a list of page handle objects for rendering.
|
|
|
|
handles.push({
|
|
|
|
|
|
|
|
label: i + 1,
|
|
|
|
|
|
|
|
title: "No. " + (i + 1),
|
|
|
|
|
|
|
|
className: currentPage === i ? "active" : undefined
|
|
|
|
|
|
|
|
});
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
var ffLabels = this.fastForwardHandleLabels;
|
|
|
|
@return {Array.<Object>} an array of page handle objects hashes
|
|
|
|
if (ffLabels) {
|
|
|
|
*/
|
|
|
|
|
|
|
|
makeHandles: function () {
|
|
|
|
|
|
|
|
|
|
|
|
if (ffLabels.prev) {
|
|
|
|
var handles = [];
|
|
|
|
handles.unshift({
|
|
|
|
var collection = this.collection;
|
|
|
|
label: ffLabels.prev,
|
|
|
|
|
|
|
|
className: collection.hasPrevious() ? void 0 : "disabled"
|
|
|
|
|
|
|
|
});
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (ffLabels.first) {
|
|
|
|
var window = this._calculateWindow();
|
|
|
|
handles.unshift({
|
|
|
|
var winStart = window[0], winEnd = window[1];
|
|
|
|
label: ffLabels.first,
|
|
|
|
|
|
|
|
className: collection.hasPrevious() ? void 0 : "disabled"
|
|
|
|
|
|
|
|
});
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (ffLabels.next) {
|
|
|
|
for (var i = winStart; i < winEnd; i++) {
|
|
|
|
handles.push({
|
|
|
|
handles.push(new this.pageHandle({
|
|
|
|
label: ffLabels.next,
|
|
|
|
collection: collection,
|
|
|
|
className: collection.hasNext() ? void 0 : "disabled"
|
|
|
|
pageIndex: i
|
|
|
|
});
|
|
|
|
}));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (ffLabels.last) {
|
|
|
|
var controls = this.controls;
|
|
|
|
handles.push({
|
|
|
|
_.each(["back", "rewind", "forward", "fastForward"], function (key) {
|
|
|
|
label: ffLabels.last,
|
|
|
|
var value = controls[key];
|
|
|
|
className: collection.hasNext() ? void 0 : "disabled"
|
|
|
|
if (value) {
|
|
|
|
});
|
|
|
|
var handleCtorOpts = {
|
|
|
|
|
|
|
|
collection: collection,
|
|
|
|
|
|
|
|
title: value.title,
|
|
|
|
|
|
|
|
label: value.label
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
handleCtorOpts["is" + key.slice(0, 1).toUpperCase() + key.slice(1)] = true;
|
|
|
|
|
|
|
|
var handle = new this.pageHandle(handleCtorOpts);
|
|
|
|
|
|
|
|
if (key == "rewind" || key == "back") handles.unshift(handle);
|
|
|
|
|
|
|
|
else handles.push(handle);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}, this);
|
|
|
|
|
|
|
|
|
|
|
|
return handles;
|
|
|
|
return handles;
|
|
|
|
},
|
|
|
|
},
|
|
|
|
@ -184,15 +329,24 @@
|
|
|
|
render: function () {
|
|
|
|
render: function () {
|
|
|
|
this.$el.empty();
|
|
|
|
this.$el.empty();
|
|
|
|
|
|
|
|
|
|
|
|
this.$el.append(this.template({
|
|
|
|
if (this.handles) {
|
|
|
|
handles: this.makeHandles()
|
|
|
|
for (var i = 0, l = this.handles.length; i < l; i++) {
|
|
|
|
}));
|
|
|
|
this.handles[i].remove();
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
this.delegateEvents();
|
|
|
|
var handles = this.handles = this.makeHandles();
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
var ul = document.createElement("ul");
|
|
|
|
|
|
|
|
for (var i = 0; i < handles.length; i++) {
|
|
|
|
|
|
|
|
ul.appendChild(handles[i].render().el);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
this.el.appendChild(ul);
|
|
|
|
|
|
|
|
|
|
|
|
return this;
|
|
|
|
return this;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
});
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
|
|
}(jQuery, _, Backbone, Backgrid));
|
|
|
|
}));
|
|
|
|
|
Mark McDowall
11 years ago