mediawiki-extensions-Visual.../modules/ve/ui/inspectors/ve.ui.LinkInspector.js
Rob Moen 9ba19af1c0 Immediately provide default suggestions based on 0 results.
Allows suggest tool to open immediately and provide new page and
external link suggestions for link inspector.

Resolves (Bug 42341)

Change-Id: I79bc3e31033b5c38c3ed6ab23e601476cb17ba8f
2012-11-29 15:26:47 -08:00

386 lines
10 KiB
JavaScript

/*global mw */
/**
* VisualEditor user interface LinkInspector class.
*
* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/**
* Creates an ve.ui.LinkInspector object.
*
* @class
* @constructor
* @extends {ve.ui.Inspector}
* @param context
*/
ve.ui.LinkInspector = function VeUiLinkInspector( context ) {
// Parent constructor
ve.ui.Inspector.call( this, context );
// Properties
this.context = context;
this.initialTarget = null;
this.isNewAnnotation = false;
this.$locationInput = this.frame.$$(
'<input type="text" class="ve-ui-linkInspector-location ve-ui-icon-down" />'
);
// Initialization
this.$form.append( this.$locationInput );
// FIXME: MediaWiki-specific
if ( 'mw' in window ) {
this.initMultiSuggest();
}
};
/* Inheritance */
ve.inheritClass( ve.ui.LinkInspector, ve.ui.Inspector );
/* Static properties */
ve.ui.LinkInspector.static.icon = 'link';
ve.ui.LinkInspector.static.titleMessage = 'visualeditor-linkinspector-title';
ve.ui.LinkInspector.static.typePattern = /^link(\/MW(in|ex)ternal)?$/;
/* Methods */
/**
* Responds to the inspector being initialized.
*
* There are 4 scenarios:
* * Zero-length selection not near a word -> no change, text will be inserted on close
* * Zero-length selection inside or adjacent to a word -> expand selection to cover word
* * Selection covering non-link text -> trim selection to remove leading/trailing whitespace
* * Selection covering link text -> expand selection to cover link
*
* @method
*/
ve.ui.LinkInspector.prototype.onInitialize = function () {
var fragment = this.context.getSurface().getModel().getFragment(),
annotation = this.getMatchingAnnotations( fragment ).get( 0 );
if ( !annotation ) {
if ( fragment.getRange().isCollapsed() ) {
// Expand to nearest word
fragment = fragment.expandRange( 'word' );
} else {
// Trim whitespace
fragment = fragment.trimRange();
}
if ( !fragment.getRange().isCollapsed() ) {
// Create annotation from selection
fragment.annotateContent(
'set', this.getAnnotationFromTarget( fragment.truncateRange( 255 ).getText() )
);
this.isNewAnnotation = true;
}
} else {
// Expand range to cover annotation
fragment = fragment.expandRange( 'annotation', annotation );
}
// Update selection
fragment.select();
};
/**
* Responds to the inspector being opened.
*
* @method
*/
ve.ui.LinkInspector.prototype.onOpen = function () {
var target = '',
fragment = this.context.getSurface().getModel().getFragment(),
annotation = this.getMatchingAnnotations( fragment ).get( 0 );
if ( annotation ) {
if ( annotation instanceof ve.dm.MWInternalLinkAnnotation ) {
// Internal link
target = annotation.data.title || '';
} else {
// External link
target = annotation.data.href || '';
}
}
this.initialTarget = target;
// Initialize form
this.$locationInput.val( target );
// Set focus on the location input
setTimeout( ve.bind( function () {
this.$locationInput.focus().select();
}, this ), 0 );
};
/**
* Responds to the inspector being opened.
*
* @method
* @param {Boolean} remove Annotation should be removed
*/
ve.ui.LinkInspector.prototype.onClose = function ( remove ) {
var i, len, annotations,
insert = false,
undo = false,
clear = false,
set = false,
target = this.$locationInput.val(),
surface = this.context.getSurface(),
selection = surface.getModel().getSelection(),
fragment = surface.getModel().getFragment( this.initialSelection, false );
// Empty target is a shortcut for removal
if ( target === '' ) {
remove = true;
}
if ( remove ) {
clear = true;
} else {
if ( this.initialSelection.isCollapsed() ) {
insert = true;
}
if ( target !== this.initialTarget ) {
if ( this.isNewAnnotation ) {
undo = true;
} else {
clear = true;
}
set = true;
}
}
if ( insert ) {
// Insert default text and select it
fragment = fragment.insertContent( target, false ).adjustRange( -target.length );
}
if ( undo ) {
// Go back to before we added an annotation in an onInitialize handler
surface.execute( 'history', 'undo' );
}
if ( clear ) {
// Clear all existing annotations
annotations = this.getMatchingAnnotations( fragment ).get();
for ( i = 0, len = annotations.length; i < len; i++ ) {
fragment.annotateContent( 'clear', annotations[i] );
}
}
if ( set ) {
// Apply new annotation
fragment.annotateContent( 'set', this.getAnnotationFromTarget( target ) );
}
// Selection changes may have occured in the insertion and annotation hullabaloo - restore it
surface.execute( 'content', 'select', selection );
// Reset state
this.isNewAnnotation = false;
};
/**
* Gets an annotation object from a target.
*
* The type of link is automatically detected based on some crude heuristics.
*
* @method
* @param {String} target Link target
* @returns {ve.dm.Annotation}
*/
ve.ui.LinkInspector.prototype.getAnnotationFromTarget = function ( target ) {
var title, annotation;
// FIXME: MediaWiki-specific
if ( 'mw' in window ) {
// Figure out if this is an internal or external link
if ( target.match( /^(https?:)?\/\// ) ) {
// External link
annotation = new ve.dm.MWExternalLinkAnnotation();
annotation.data.href = target;
} else {
// Internal link
// TODO: In the longer term we'll want to have autocompletion and existence and validity
// checks using AJAX
try {
title = new mw.Title( target );
if ( title.getNamespaceId() === 6 || title.getNamespaceId() === 14 ) {
// File: or Category: link
// We have to prepend a colon so this is interpreted as a link
// rather than an image inclusion or categorization
target = ':' + target;
}
} catch ( e ) { }
annotation = new ve.dm.MWInternalLinkAnnotation();
annotation.data.title = target;
}
} else {
// Default to generic external link
annotation = new ve.dm.LinkAnnotation();
annotation.data.href = target;
}
return annotation;
};
/**
* Initalizes the multi-suggest plugin for the location input.
*
* TODO: Consider cleaning up and organizing this all a bit.
*
* @method
*/
ve.ui.LinkInspector.prototype.initMultiSuggest = function () {
var options,
inspector = this,
context = inspector.context,
$overlay = context.$overlay,
suggestionCache = {},
pageStatusCache = {},
api = new mw.Api();
function updateLocationStatus( status ) {
inspector.$locationInput.data( 'status', status );
}
// Multi Suggest configuration.
options = {
'parent': $overlay,
'prefix': 've-ui',
// Disable CSS Ellipsis.
// Using MediaWiki jQuery.autoEllipsis() for center ellipsis.
'cssEllipsis': false,
// Build suggestion groups in order.
'suggestions': function ( params ) {
var modifiedQuery, title, prot,
groups = {},
results = params.results,
query = params.query;
// Add existing pages.
if ( results.length > 0 ) {
groups.existingPage = {
'label': ve.msg( 'visualeditor-linkinspector-suggest-existing-page' ),
'items': results,
'itemClass': 've-ui-suggest-item-existingPage'
};
}
// Run the query through the mw.Title object to handle correct capitalization,
// whitespace and and namespace alias/localization resolution.
try {
title = new mw.Title( query );
modifiedQuery = title.getPrefixedText();
// If page doesn't exist, add New Page group.
if ( ve.indexOf( modifiedQuery, results ) === -1 ) {
groups.newPage = {
'label': ve.msg( 'visualeditor-linkinspector-suggest-new-page' ),
'items': [modifiedQuery],
'itemClass': 've-ui-suggest-item-newPage'
};
}
} catch ( e ) {
// invalid input
ve.log( e );
}
// Add external
groups.externalLink = {
'label': ve.msg( 'visualeditor-linkinspector-suggest-external-link' ),
'items': [],
'itemClass': 've-ui-suggest-item-externalLink'
};
// Find a protocol and suggest an external link.
prot = query.match(
ve.init.platform.getExternalLinkUrlProtocolsRegExp()
);
if ( prot ) {
groups.externalLink.items = [query];
// No protocol, default to http
} else {
groups.externalLink.items = ['http://' + query];
}
return groups;
},
// Called on succesfull input.
'input': function ( callback ) {
var $input = $( this ),
query = $input.val(),
cKey = query.toLowerCase();
// Query page and set status data on the location input.
if ( pageStatusCache[query] !== undefined ) {
updateLocationStatus( pageStatusCache[query] );
} else {
api.get( {
'action': 'query',
'indexpageids': '',
'titles': query,
'converttitles': ''
} )
.done( function ( data ) {
var status, page;
if ( data.query ) {
page = data.query.pages[data.query.pageids[0]];
status = 'exists';
if ( page.missing !== undefined ) {
status = 'notexists';
} else if ( page.invalid !== undefined ) {
status = 'invalid';
}
}
// Cache the status of the link query.
pageStatusCache[query] = status;
updateLocationStatus( status );
} );
}
// Set overlay position.
options.position();
// Build from cache.
if ( suggestionCache[cKey] !== undefined ) {
callback( {
'query': query,
'results': suggestionCache[cKey]
} );
} else {
// Load immediate suggestions
callback( {
'query': query,
'results': []
} );
// Build from fresh api request.
api.get( {
'action': 'opensearch',
'search': query
} )
.done( function ( data ) {
suggestionCache[cKey] = data[1];
// Build
callback( {
'query': query,
'results': data[1]
} );
} );
}
},
// Called when multiSuggest dropdown is updated.
'update': function () {
// Ellipsis
$( '.ve-ui-suggest-item' )
.autoEllipsis( {
'hasSpan': true,
'tooltip': true
} );
},
// Position the iframe overlay below the input.
'position': function () {
context.positionOverlayBelow( $overlay, inspector.$locationInput );
},
// Fired when a suggestion is selected.
'select': function () {
// Assume page suggestion is valid.
updateLocationStatus( 'valid' );
}
};
// Setup Multi Suggest
this.$locationInput.multiSuggest( options );
};
/* Registration */
ve.ui.inspectorFactory.register( 'link', ve.ui.LinkInspector );