782 lines
21 KiB
JavaScript
782 lines
21 KiB
JavaScript
window.wp = window.wp || {};
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(function($) {
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var Revision, Revisions, Diff, l10n, revisions;
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revisions = wp.revisions = function() {
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Diff = revisions.Diff = new Diff();
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};
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_.extend( revisions, { model: {}, view: {}, controller: {} } );
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// Link any localized strings.
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l10n = revisions.model.l10n = typeof wpRevisionsL10n === 'undefined' ? {} : wpRevisionsL10n;
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// Link any settings.
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revisions.model.settings = l10n.settings || {};
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delete l10n.settings;
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/**
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* ========================================================================
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* CONTROLLERS
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* ========================================================================
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*/
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/**
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* wp.revisions.controller.Diff
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*
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* Controlls the diff
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*/
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Diff = revisions.controller.Diff = Backbone.Model.extend( {
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rightDiff: 1,
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leftDiff: 1,
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revisions: null,
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leftHandleRevisions: null,
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rightHandleRevisions: null,
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revisionsInteractions: null,
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autosaves: true,
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showSplitView: true,
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singleRevision: true,
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leftModelLoading: false, // keep track of model loads
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rightModelLoading: false, // disallow slider interaction, also repeat loads, while loading
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tickmarkView: null, // the slider tickmarks
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slider: null, // the slider instance
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constructor: function() {
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this.slider = new revisions.view.Slider();
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if ( null === this.revisions ) {
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this.revisions = new Revisions(); // set up collection
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this.startRightModelLoading();
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var self = this;
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this.revisions.fetch({ // load revision data
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success: function() {
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self.stopRightModelLoading();
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self.completeApplicationSetup();
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}
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});
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}
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},
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loadDiffs: function( models ) {
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var self = this,
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revisionsToLoad = models.where( { completed: false } ),
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delay = 0;
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// match slider to passed revision_id
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_.each( revisionsToLoad, function( revision ) {
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if ( revision.get( 'ID' ) == revisions.model.settings.revision_id )
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self.rightDiff = self.revisions.indexOf( revision ) + 1;
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});
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_.each( revisionsToLoad, function( revision ) {
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_.delay( function() {
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revision.fetch( {
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update: true,
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add: false,
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remove: false,
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success: function( model ) {
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model.set( 'completed', true );
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// stop spinner when all models are loaded
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if ( 0 === models.where( { completed: false } ).length )
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self.stopModelLoadingSpinner();
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self.tickmarkView.render();
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var totalChanges = model.get( 'linesAdded' ) + model.get( 'linesDeleted' ),
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scopeOfChanges = 'vsmall';
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// Note: hard coded scope of changes
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// TODO change to dynamic based on range of values
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if ( totalChanges > 1 && totalChanges <= 3 ) {
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scopeOfChanges = 'small';
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} else if ( totalChanges > 3 && totalChanges <= 5 ) {
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scopeOfChanges = 'med';
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} else if ( totalChanges > 5 && totalChanges <= 10 ) {
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scopeOfChanges = 'large';
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} else if ( totalChanges > 10 ) {
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scopeOfChanges = 'vlarge';
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}
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model.set( 'scopeOfChanges', scopeOfChanges );
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if ( 0 !== self.rightDiff &&
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model.get( 'ID' ) === self.revisions.at( self.rightDiff - 1 ).get( 'ID' ) ) {
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// reload if current model refreshed
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self.revisionView.render();
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}
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}
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} );
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}, delay ) ;
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delay = delay + 150; // stagger model loads to avoid hammering server with requests
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}
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);
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},
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startLeftModelLoading: function() {
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this.leftModelLoading = true;
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$('#revision-diff-container').addClass('left-model-loading');
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},
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stopLeftModelLoading: function() {
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this.leftModelLoading = false;
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},
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startRightModelLoading: function() {
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this.rightModelLoading = true;
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$('#revision-diff-container').addClass('right-model-loading');
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},
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stopRightModelLoading: function() {
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this.rightModelLoading = false;
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},
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stopModelLoadingSpinner: function() {
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$('#revision-diff-container').removeClass('right-model-loading');
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$('#revision-diff-container').removeClass('left-model-loading');
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},
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reloadModel: function() {
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if ( this.singleRevision ) {
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this.reloadModelSingle();
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} else {
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this.reloadLeftRight();
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}
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},
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// load the models for the single handle mode
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reloadModelSingle: function() {
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var self = this;
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self.startRightModelLoading();
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self.revisions.reload({
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options: {
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'showAutosaves': self.autosaves,
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'showSplitView': self.showSplitView
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},
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success: function() {
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var revisionCount = self.revisions.length;
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self.revisionView.model = self.revisions;
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self.revisionView.render();
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self.loadDiffs( self.revisions );
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self.tickmarkView.model = self.revisions;
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self.tickmarkView.render();
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self.slider.refresh({
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'max': revisionCount - 1,
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'value': self.rightDiff - 1
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}, true);
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},
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error: function() {
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self.stopRightModelLoading();
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}
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});
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},
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// load the models for the left handle
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reloadLeft: function() {
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var self = this;
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self.startLeftModelLoading();
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self.leftHandleRevisions = new Revisions( {}, {
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'compareTo': self.revisions.at( self.rightDiff - 1 ).get( 'ID' ),
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'showAutosaves': self.autosaves,
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'showSplitView': self.showSplitView,
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'rightHandleAt': self.rightDiff
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});
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self.leftHandleRevisions.fetch({
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success: function(){
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self.stopLeftModelLoading();
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self.loadDiffs( self.leftHandleRevisions );
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self.tickmarkView.model = self.leftHandleRevisions;
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self.slider.refresh({
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'max': self.revisions.length
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});
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// ensure right handle not beyond length, in particular if viewing autosaves is switched from on to off
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// the number of models in the collection might get shorter, this ensures right handle is not beyond last model
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if ( self.rightDiff > self.revisions.length )
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self.rightDiff = self.revisions.length;
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},
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error: function() {
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self.stopLeftModelLoading();
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}
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});
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},
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// load the models for the right handle
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reloadRight: function() {
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var self = this;
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self.startRightModelLoading();
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self.rightHandleRevisions = new Revisions( {}, {
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'compareTo': self.revisions.at( self.leftDiff ).get( 'ID' ) - 1,
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'showAutosaves': self.autosaves,
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'showSplitView': self.showSplitView,
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'leftHandleAt': self.leftDiff
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});
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self.rightHandleRevisions.fetch({
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success: function(){
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self.stopRightModelLoading();
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self.loadDiffs( self.rightHandleRevisions );
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self.tickmarkView.model = self.rightHandleRevisions;
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self.slider.refresh({
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'max': self.revisions.length,
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'values': [ self.leftDiff, self.rightDiff]
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}, true);
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},
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error: function( response ) {
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self.stopRightModelLoading();
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}
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});
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},
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reloadLeftRight: function() {
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this.startRightModelLoading();
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this.startLeftModelLoading();
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this.reloadLeft();
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this.reloadRight();
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},
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disabledButtonCheck: function( val ) {
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var maxVal = this.revisions.length - 1,
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next = $( '#next' ),
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prev = $( '#previous' );
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// Disable "Next" button if you're on the last node
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if ( maxVal === val )
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next.prop( 'disabled', true );
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else
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next.prop( 'disabled', false );
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// Disable "Previous" button if you're on the 0 node
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if ( 0 === val )
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prev.prop( 'disabled', true );
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else
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prev.prop( 'disabled', false );
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},
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completeApplicationSetup: function() {
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this.revisionView = new revisions.view.Diff({
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model: this.revisions
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});
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this.revisionView.render();
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this.loadDiffs( this.revisions );
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this.revisionsInteractions = new revisions.view.Interact({
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model: this.revisions
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});
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this.revisionsInteractions.render();
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this.tickmarkView = new revisions.view.Tickmarks({
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model: this.revisions
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});
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this.tickmarkView.render();
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this.tickmarkView.resetTicks();
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}
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});
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/**
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* ========================================================================
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* VIEWS
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* ========================================================================
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*/
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/**
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* wp.revisions.view.Slider
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*
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* The slider
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*/
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revisions.view.Slider = Backbone.View.extend({
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el: $( '#diff-slider' ),
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singleRevision: true,
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initialize: function( options ) {
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this.options = _.defaults( options || {}, {
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value: 0,
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min: 0,
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max: 1,
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step: 1
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});
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},
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slide: function( event, ui ) {
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if ( this.singleRevision ) {
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Diff.rightDiff = ( ui.value + 1 );
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Diff.revisionView.render();
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Diff.disabledButtonCheck( ui.value );
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} else {
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if ( ui.values[0] === ui.values[1] ) // prevent compare to self
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return false;
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if ( $( ui.handle ).hasClass( 'left-handle' ) ) {
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// Left handler
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if ( Diff.leftModelLoading ) // left model still loading, prevent sliding left handle
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return false;
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Diff.leftDiff = ui.values[0];
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} else {
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// Right handler
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if ( Diff.rightModelLoading ) // right model still loading, prevent sliding right handle
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return false;
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Diff.rightDiff = ui.values[1];
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}
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if ( 0 === Diff.leftDiff ) {
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$( '#revision-diff-container' ).addClass( 'current-version' );
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} else {
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$( '#revision-diff-container' ).removeClass( 'current-version' );
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}
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Diff.revisionView.render();
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}
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},
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start: function( event, ui ) {
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// Not needed in one mode
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if ( this.singleRevision )
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return;
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if ( $( ui.handle ).hasClass( 'left-handle' ) ) {
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// Left handler
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if ( Diff.leftModelLoading ) // left model still loading, prevent sliding left handle
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return false;
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Diff.revisionView.draggingLeft = true;
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if ( Diff.revisionView.model !== Diff.leftHandleRevisions &&
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null !== Diff.leftHandleRevisions ) {
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Diff.revisionView.model = Diff.leftHandleRevisions;
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Diff.tickmarkView.model = Diff.leftHandleRevisions;
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Diff.tickmarkView.render();
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}
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Diff.leftDiffStart = ui.values[ 0 ];
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} else {
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// Right handler
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if ( Diff.rightModelLoading || 0 === Diff.rightHandleRevisions.length) // right model still loading, prevent sliding right handle
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return false;
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if ( Diff.revisionView.model !== Diff.rightHandleRevisions &&
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null !== Diff.rightHandleRevisions ) {
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Diff.revisionView.model = Diff.rightHandleRevisions;
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Diff.tickmarkView.model = Diff.rightHandleRevisions;
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Diff.tickmarkView.render();
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}
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Diff.revisionView.draggingLeft = false;
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Diff.rightDiffStart = ui.values[1];
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}
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},
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stop: function( event, ui ) {
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// Not needed in one mode
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if ( this.singleRevision )
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return;
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// calculate and generate a diff for comparing to the left handle
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// and the right handle, swap out when dragging
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if ( $( ui.handle ).hasClass( 'left-handle' ) ) {
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// Left hadnler
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if ( Diff.leftDiffStart !== ui.values[0] )
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Diff.reloadRight();
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} else {
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// Right handler
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if ( Diff.rightDiffStart !== ui.values[1] )
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Diff.reloadLeft();
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}
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},
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addTooltip: function( handle, message ) {
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handle.attr( 'title', '' ).tooltip({
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track: false,
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position: {
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my: "left-30 top-66",
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at: "top left",
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using: function( position, feedback ) {
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$( this ).css( position );
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$( "<div>" )
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.addClass( "arrow" )
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.addClass( feedback.vertical )
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.addClass( feedback.horizontal )
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.appendTo( $( this ) );
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}
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},
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show: false,
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hide: false,
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content: function() {
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return message;
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}
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} );
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},
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width: function() {
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return $( '#diff-slider' ).width();
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},
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setWidth: function( width ) {
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return $( '#diff-slider' ).width( width );
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},
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refresh: function( options, slide ) {
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$( '#diff-slider' ).slider( 'option', options );
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// Triggers the slide event
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if ( slide )
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$( '#diff-slider' ).trigger( 'slide' );
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Diff.disabledButtonCheck( options.value );
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},
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option: function( key ) {
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return $( '#diff-slider' ).slider( 'option', key );
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},
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render: function() {
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var self = this;
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// this.$el doesn't work, why?
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$( '#diff-slider' ).slider( {
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slide: $.proxy( self.slide, self ),
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start: $.proxy( self.start, self ),
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stop: $.proxy( self.stop, self )
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} );
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// Set options
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this.refresh( this.options );
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}
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});
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/**
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* wp.revisions.view.Tickmarks
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*
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* The slider tickmarks.
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*/
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revisions.view.Tickmarks = Backbone.View.extend({
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el: $('#diff-slider-ticks'),
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template: wp.template('revision-ticks'),
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model: Revision,
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resetTicks: function() {
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var sliderMax = Diff.slider.option( 'max' );
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var sliderWidth = Diff.slider.width();
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var adjustMax = Diff.singleRevision ? 0 : 1;
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var tickWidth = Math.floor( sliderWidth / ( sliderMax - adjustMax ) );
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// TODO: adjust right margins for wider ticks so they stay centered on handle stop point
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// set minimum and maximum widths for tick marks
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tickWidth = (tickWidth > 50 ) ? 50 : tickWidth;
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tickWidth = (tickWidth < 10 ) ? 10 : tickWidth;
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sliderWidth = tickWidth * (sliderMax - adjustMax ) + 1;
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Diff.slider.setWidth( sliderWidth );
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$( '.diff-slider-ticks-wrapper' ).width( sliderWidth );
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$( '#diff-slider-ticks' ).width( sliderWidth );
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var aTickWidth = $( '.revision-tick' ).width();
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if ( tickWidth !== aTickWidth ) { // is the width already set correctly?
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$( '.revision-tick' ).each( function( ) {
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$(this).css( 'margin-right', tickWidth - 1 + 'px'); // space the ticks out using right margin
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});
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$( '.revision-tick' ).last().css( 'margin-right', '0' ); // last tick gets no right margin
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}
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},
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// render the tickmark view
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render: function() {
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var self = this;
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if ( null !== self.model ) {
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var addHtml = "";
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_.each ( self.model.models, function( theModel ) {
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addHtml = addHtml + self.template ( theModel.toJSON() );
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});
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self.$el.html( addHtml );
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}
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self.resetTicks();
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return self;
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}
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});
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/**
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* wp.revisions.view.Interact
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*
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* Next/Prev buttons and the slider
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*/
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// TODO: Change Interact to something else.
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revisions.view.Interact = Backbone.View.extend({
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el: $( '#revision-interact' ),
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template: wp.template( 'revision-interact' ),
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// next and previous buttons, only available in compare one mode
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events: {
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'click #next': 'nextRevision',
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'click #previous': 'previousRevision'
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},
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render: function() {
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this.$el.html( this.template );
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var modelcount = Diff.revisions.length;
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Diff.slider.singleRevision = Diff.singleRevision;
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Diff.slider.render();
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if ( Diff.singleRevision ) {
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Diff.slider.refresh({
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value: Diff.rightDiff - 1,
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min: 0,
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max: modelcount - 1
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});
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$( '#revision-diff-container' ).removeClass( 'comparing-two-revisions' );
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} else {
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Diff.slider.refresh({
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values: [ Diff.leftDiff, Diff.rightDiff + 1 ],
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min: 1,
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max: modelcount + 1,
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range: true
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});
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$( '#revision-diff-container' ).addClass( 'comparing-two-revisions' );
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$( '#diff-slider a.ui-slider-handle' ).first().addClass( 'left-handle' );
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$( '#diff-slider a.ui-slider-handle' ).last().addClass( 'right-handle' );
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}
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return this;
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},
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// go to the next revision
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nextRevision: function() {
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if ( Diff.rightDiff < this.model.length ) // unless at right boundry
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Diff.rightDiff = Diff.rightDiff + 1 ;
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Diff.revisionView.render();
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Diff.slider.refresh({
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value: Diff.rightDiff - 1
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}, true );
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},
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// go the the previous revision
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previousRevision: function() {
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if ( Diff.rightDiff > 1 ) // unless at left boundry
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Diff.rightDiff = Diff.rightDiff - 1 ;
|
|
|
|
Diff.revisionView.render();
|
|
|
|
Diff.slider.refresh({
|
|
value: Diff.rightDiff - 1
|
|
}, true );
|
|
}
|
|
});
|
|
|
|
/**
|
|
* wp.revisions.view.Diff
|
|
*
|
|
* Next/Prev buttons and the slider
|
|
*/
|
|
revisions.view.Diff = Backbone.View.extend({
|
|
el: $( '#revisions-diff' ),
|
|
template: wp.template( 'revisions-diff' ),
|
|
draggingLeft: false,
|
|
|
|
// the compare two button is in this view, add the interaction here
|
|
events: {
|
|
'click #compare-two-revisions': 'compareTwo',
|
|
'click #restore-revision': 'restore'
|
|
},
|
|
|
|
// render the revisions
|
|
render: function() {
|
|
var addHtml = '';
|
|
var thediff;
|
|
|
|
// compare two revisions mode?
|
|
if ( ! Diff.singleRevision ) {
|
|
if ( this.draggingLeft ) {
|
|
thediff = Diff.leftDiff - 1;
|
|
if ( this.model.at( thediff ) ) {
|
|
addHtml = this.template( this.model.at( thediff ).toJSON() );
|
|
}
|
|
} else { // dragging right handle
|
|
thediff = Diff.rightDiff -1;
|
|
if ( this.model.at( thediff ) ) {
|
|
addHtml = this.template( this.model.at( thediff ).toJSON() );
|
|
}
|
|
}
|
|
} else { // end compare two revisions mode, eg only one slider handle
|
|
if ( this.model.at( Diff.rightDiff - 1 ) ) {
|
|
addHtml = this.template( this.model.at( Diff.rightDiff - 1 ).toJSON() );
|
|
}
|
|
}
|
|
this.$el.html( addHtml );
|
|
|
|
if ( this.model.length < 2 ) {
|
|
$( '#diff-slider' ).hide(); // don't allow compare two if fewer than three revisions
|
|
$( '.diff-slider-ticks-wrapper' ).hide();
|
|
}
|
|
|
|
// add tooltips to the handles
|
|
if ( ! Diff.singleRevision ) {
|
|
Diff.slider.addTooltip ( $( 'a.ui-slider-handle.left-handle' ),
|
|
( Diff.leftDiff < 0 ) ? '' : Diff.revisions.at( Diff.leftDiff - 1 ).get( 'titleTooltip' ) );
|
|
Diff.slider.addTooltip ( $( 'a.ui-slider-handle.right-handle' ),
|
|
( Diff.rightDiff > Diff.revisions.length ) ? '' : Diff.revisions.at( Diff.rightDiff - 1 ).get( 'titleTooltip' ) );
|
|
} else {
|
|
Diff.slider.addTooltip ( $( 'a.ui-slider-handle' ),
|
|
( Diff.rightDiff > Diff.revisions.length ) ? '' : Diff.revisions.at( Diff.rightDiff - 1 ).get( 'titleTooltip' ) );
|
|
}
|
|
|
|
this.toggleCompareTwoCheckbox();
|
|
|
|
// hide the restore button when on the last sport/current post data
|
|
$( '#restore-revision' ).toggle( ! Diff.revisions.at( Diff.rightDiff - 1 ).get( 'isCurrent' ) );
|
|
|
|
return this;
|
|
},
|
|
|
|
toggleCompareTwoCheckbox: function() {
|
|
// don't allow compare two if fewer than three revisions
|
|
if ( this.model.length < 3 )
|
|
$( '#toggle-revision-compare-mode' ).hide();
|
|
|
|
$( '#compare-two-revisions' ).prop( 'checked', ! Diff.singleRevision );
|
|
},
|
|
|
|
// turn on/off the compare two mode
|
|
compareTwo: function() {
|
|
if ( $( '#compare-two-revisions' ).is( ':checked' ) ) { // compare 2 mode
|
|
Diff.singleRevision = false ;
|
|
|
|
if ( 1 === Diff.rightDiff )
|
|
Diff.rightDiff = 2;
|
|
|
|
Diff.revisionView.draggingLeft = false;
|
|
|
|
revisions.model.settings.revision_id = ''; // reset passed revision id so switching back to one handle mode doesn't re-select revision
|
|
Diff.reloadLeftRight();
|
|
Diff.revisionView.model = Diff.rightHandleRevisions;
|
|
|
|
} else { // compare one mode
|
|
Diff.singleRevision = true;
|
|
Diff.revisionView.draggingLeft = false;
|
|
Diff.reloadModelSingle();
|
|
}
|
|
Diff.revisionsInteractions.render();
|
|
Diff.tickmarkView.render();
|
|
},
|
|
|
|
restore: function() {
|
|
document.location = $( '#restore-revision' ).data( 'restoreLink' );
|
|
}
|
|
});
|
|
|
|
|
|
/**
|
|
* ========================================================================
|
|
* MODELS
|
|
* ========================================================================
|
|
*/
|
|
|
|
/**
|
|
* wp.revisions.Revision
|
|
*/
|
|
Revision = revisions.model.Revision = Backbone.Model.extend({
|
|
idAttribute: 'ID',
|
|
|
|
defaults: {
|
|
ID: 0,
|
|
titleTo: '',
|
|
titleTooltip: '',
|
|
titleFrom: '',
|
|
diff: '<div class="diff-loading"><div class="spinner"></div></div>',
|
|
restoreLink: '',
|
|
completed: false,
|
|
linesAdded: 0,
|
|
linesDeleted: 0,
|
|
scopeOfChanges: 'none',
|
|
previousID: 0,
|
|
isCurrent: false
|
|
},
|
|
|
|
url: function() {
|
|
if ( Diff.singleRevision ) {
|
|
return ajaxurl +
|
|
'?action=revisions-data' +
|
|
'&show_autosaves=true' +
|
|
'&show_split_view=true' +
|
|
'&nonce=' + revisions.model.settings.nonce +
|
|
'&single_revision_id=' + this.id +
|
|
'&compare_to=' + this.get( 'previousID' ) +
|
|
'&post_id=' + revisions.model.settings.post_id;
|
|
} else {
|
|
return this.collection.url() + '&single_revision_id=' + this.id;
|
|
}
|
|
|
|
}
|
|
});
|
|
|
|
/**
|
|
* wp.revisions.Revisions
|
|
*/
|
|
Revisions = revisions.Revisions = Backbone.Collection.extend({
|
|
model: Revision,
|
|
|
|
initialize: function( models, options ) {
|
|
this.options = _.defaults( options || {}, {
|
|
'compareTo': revisions.model.settings.post_id,
|
|
'post_id': revisions.model.settings.post_id,
|
|
'showAutosaves': true,
|
|
'showSplitView': true,
|
|
'rightHandleAt': 0,
|
|
'leftHandleAt': 0,
|
|
'nonce': revisions.model.settings.nonce
|
|
});
|
|
},
|
|
|
|
url: function() {
|
|
return ajaxurl +
|
|
'?action=revisions-data' +
|
|
'&compare_to=' + this.options.compareTo +
|
|
'&post_id=' + this.options.post_id +
|
|
'&show_autosaves=' + this.options.showAutosaves +
|
|
'&show_split_view=' + this.options.showSplitView +
|
|
'&right_handle_at=' + this.options.rightHandleAt +
|
|
'&left_handle_at=' + this.options.leftHandleAt +
|
|
'&nonce=' + this.options.nonce;
|
|
},
|
|
|
|
reload: function( options ) {
|
|
this.options = _.defaults( options.options || {}, this.options );
|
|
|
|
this.fetch({
|
|
success: options.success || null,
|
|
error: options.error || null
|
|
});
|
|
}
|
|
|
|
} );
|
|
|
|
$( wp.revisions );
|
|
|
|
}(jQuery));
|