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( function ( mw ) {
/**
* View model for the changes list
*
* @mixins OO.EventEmitter
*
* @param {jQuery} $initialFieldset The initial server-generated legacy form content
* @constructor
*/
mw.rcfilters.dm.ChangesListViewModel = function MwRcfiltersDmChangesListViewModel( $initialFieldset ) {
// Mixin constructor
OO.EventEmitter.call( this );
this.valid = true;
this.newChangesExist = false;
this.liveUpdate = false;
this.unseenWatchedChanges = false;
this.extractNextFrom( $initialFieldset );
};
/* Initialization */
OO.initClass( mw.rcfilters.dm.ChangesListViewModel );
OO.mixinClass( mw.rcfilters.dm.ChangesListViewModel, OO.EventEmitter );
/* Events */
/**
* @event invalidate
*
* The list of changes is now invalid (out of date)
*/
/**
* @event update
* @param {jQuery|string} $changesListContent List of changes
* @param {jQuery} $fieldset Server-generated form
* @param {string} noResultsDetails Type of no result error
* @param {boolean} isInitialDOM Whether the previous dom variables are from the initial page load
* @param {boolean} fromLiveUpdate These are new changes fetched via Live Update
*
* The list of changes has been updated
*/
/**
* @event newChangesExist
* @param {boolean} newChangesExist
*
* The existence of changes newer than those currently displayed has changed.
*/
/**
* @event liveUpdateChange
* @param {boolean} enable
*
* The state of the 'live update' feature has changed.
*/
/* Methods */
/**
* Invalidate the list of changes
*
* @fires invalidate
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.invalidate = function () {
if ( this.valid ) {
this.valid = false;
this.emit( 'invalidate' );
}
};
/**
* Update the model with an updated list of changes
*
* @param {jQuery|string} changesListContent
* @param {jQuery} $fieldset
* @param {string} noResultsDetails Type of no result error
* @param {boolean} [isInitialDOM] Using the initial (already attached) DOM elements
* @param {boolean} [separateOldAndNew] Whether a logical separation between old and new changes is needed
* @fires update
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.update = function ( changesListContent, $fieldset, noResultsDetails, isInitialDOM, separateOldAndNew ) {
var from = this.nextFrom;
this.valid = true;
this.extractNextFrom( $fieldset );
this.checkForUnseenWatchedChanges( changesListContent );
this.emit( 'update', changesListContent, $fieldset, noResultsDetails, isInitialDOM, separateOldAndNew ? from : null );
};
/**
* Specify whether new changes exist
*
* @param {boolean} newChangesExist
* @fires newChangesExist
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.setNewChangesExist = function ( newChangesExist ) {
if ( newChangesExist !== this.newChangesExist ) {
this.newChangesExist = newChangesExist;
this.emit( 'newChangesExist', newChangesExist );
}
};
/**
* @return {boolean} Whether new changes exist
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.getNewChangesExist = function () {
return this.newChangesExist;
};
/**
* Extract the value of the 'from' parameter from a link in the field set
*
* @param {jQuery} $fieldset
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.extractNextFrom = function ( $fieldset ) {
var data = $fieldset.find( '.rclistfrom > a, .wlinfo' ).data( 'params' );
if ( data && data.from ) {
this.nextFrom = data.from;
}
};
/**
* @return {string} The 'from' parameter that can be used to query new changes
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.getNextFrom = function () {
return this.nextFrom;
};
/**
* Toggle the 'live update' feature on/off
*
* @param {boolean} enable
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.toggleLiveUpdate = function ( enable ) {
enable = enable === undefined ? !this.liveUpdate : enable;
if ( enable !== this.liveUpdate ) {
this.liveUpdate = enable;
this.emit( 'liveUpdateChange', this.liveUpdate );
}
};
/**
* @return {boolean} The 'live update' feature is enabled
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.getLiveUpdate = function () {
return this.liveUpdate;
};
/**
* Check if some of the given changes watched and unseen
*
* @param {jQuery|string} changeslistContent
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.checkForUnseenWatchedChanges = function ( changeslistContent ) {
this.unseenWatchedChanges = changeslistContent !== 'NO_RESULTS' &&
changeslistContent.find( '.mw-changeslist-line-watched' ).length > 0;
};
/**
* @return {boolean} Whether some of the current changes are watched and unseen
*/
mw.rcfilters.dm.ChangesListViewModel.prototype.hasUnseenWatchedChanges = function () {
return this.unseenWatchedChanges;
};
}( mediaWiki ) );
|
