Web.Admin/2014/wordpress/wp-includes/js/wplink.js
/* global ajaxurl, tinymce, wpLinkL10n, setUserSetting, wpActiveEditor */
var wpLink;
( function( $ ) {
var inputs = {}, rivers = {}, editor, searchTimer, River, Query;
wpLink = {
timeToTriggerRiver: 150,
minRiverAJAXDuration: 200,
riverBottomThreshold: 5,
keySensitivity: 100,
lastSearch: '',
textarea: '',
init: function() {
inputs.wrap = $('#wp-link-wrap');
inputs.dialog = $( '#wp-link' );
inputs.backdrop = $( '#wp-link-backdrop' );
inputs.submit = $( '#wp-link-submit' );
inputs.close = $( '#wp-link-close' );
// URL
inputs.url = $( '#url-field' );
inputs.nonce = $( '#_ajax_linking_nonce' );
// Secondary options
inputs.title = $( '#link-title-field' );
// Advanced Options
inputs.openInNewTab = $( '#link-target-checkbox' );
inputs.search = $( '#search-field' );
// Build Rivers
rivers.search = new River( $( '#search-results' ) );
rivers.recent = new River( $( '#most-recent-results' ) );
rivers.elements = inputs.dialog.find( '.query-results' );
// Bind event handlers
inputs.dialog.keydown( wpLink.keydown );
inputs.dialog.keyup( wpLink.keyup );
inputs.submit.click( function( event ) {
event.preventDefault();
wpLink.update();
});
inputs.close.add( inputs.backdrop ).add( '#wp-link-cancel a' ).click( function( event ) {
event.preventDefault();
wpLink.close();
});
$( '#wp-link-search-toggle' ).click( wpLink.toggleInternalLinking );
rivers.elements.on( 'river-select', wpLink.updateFields );
inputs.search.keyup( function() {
var self = this;
window.clearTimeout( searchTimer );
searchTimer = window.setTimeout( function() {
wpLink.searchInternalLinks.call( self );
}, 500 );
});
},
open: function( editorId ) {
var ed;
wpLink.range = null;
if ( editorId ) {
window.wpActiveEditor = editorId;
}
if ( ! window.wpActiveEditor ) {
return;
}
this.textarea = $( '#' + window.wpActiveEditor ).get( 0 );
if ( typeof tinymce !== 'undefined' ) {
ed = tinymce.get( wpActiveEditor );
if ( ed && ! ed.isHidden() ) {
editor = ed;
} else {
editor = null;
}
if ( editor && tinymce.isIE ) {
editor.windowManager.bookmark = editor.selection.getBookmark();
}
}
if ( ! wpLink.isMCE() && document.selection ) {
this.textarea.focus();
this.range = document.selection.createRange();
}
inputs.wrap.show();
inputs.backdrop.show();
wpLink.refresh();
},
isMCE: function() {
return editor && ! editor.isHidden();
},
refresh: function() {
// Refresh rivers (clear links, check visibility)
rivers.search.refresh();
rivers.recent.refresh();
if ( wpLink.isMCE() )
wpLink.mceRefresh();
else
wpLink.setDefaultValues();
// Focus the URL field and highlight its contents.
// If this is moved above the selection changes,
// IE will show a flashing cursor over the dialog.
inputs.url.focus()[0].select();
// Load the most recent results if this is the first time opening the panel.
if ( ! rivers.recent.ul.children().length )
rivers.recent.ajax();
},
mceRefresh: function() {
var e;
// If link exists, select proper values.
if ( e = editor.dom.getParent( editor.selection.getNode(), 'A' ) ) {
// Set URL and description.
inputs.url.val( editor.dom.getAttrib( e, 'href' ) );
inputs.title.val( editor.dom.getAttrib( e, 'title' ) );
// Set open in new tab.
inputs.openInNewTab.prop( 'checked', ( '_blank' === editor.dom.getAttrib( e, 'target' ) ) );
// Update save prompt.
inputs.submit.val( wpLinkL10n.update );
// If there's no link, set the default values.
} else {
wpLink.setDefaultValues();
}
},
close: function() {
if ( ! wpLink.isMCE() ) {
wpLink.textarea.focus();
if ( wpLink.range ) {
wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
wpLink.range.select();
}
} else {
editor.focus();
}
inputs.backdrop.hide();
inputs.wrap.hide();
},
getAttrs: function() {
return {
href: inputs.url.val(),
title: inputs.title.val(),
target: inputs.openInNewTab.prop( 'checked' ) ? '_blank' : ''
};
},
update: function() {
if ( wpLink.isMCE() )
wpLink.mceUpdate();
else
wpLink.htmlUpdate();
},
htmlUpdate: function() {
var attrs, html, begin, end, cursor, title, selection,
textarea = wpLink.textarea;
if ( ! textarea )
return;
attrs = wpLink.getAttrs();
// If there's no href, return.
if ( ! attrs.href || attrs.href == 'http://' )
return;
// Build HTML
html = '<a href="' + attrs.href + '"';
if ( attrs.title ) {
title = attrs.title.replace( /</g, '<' ).replace( />/g, '>' ).replace( /"/g, '"' );
html += ' title="' + title + '"';
}
if ( attrs.target ) {
html += ' target="' + attrs.target + '"';
}
html += '>';
// Insert HTML
if ( document.selection && wpLink.range ) {
// IE
// Note: If no text is selected, IE will not place the cursor
// inside the closing tag.
textarea.focus();
wpLink.range.text = html + wpLink.range.text + '</a>';
wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
wpLink.range.select();
wpLink.range = null;
} else if ( typeof textarea.selectionStart !== 'undefined' ) {
// W3C
begin = textarea.selectionStart;
end = textarea.selectionEnd;
selection = textarea.value.substring( begin, end );
html = html + selection + '</a>';
cursor = begin + html.length;
// If no text is selected, place the cursor inside the closing tag.
if ( begin == end )
cursor -= '</a>'.length;
textarea.value = textarea.value.substring( 0, begin ) + html +
textarea.value.substring( end, textarea.value.length );
// Update cursor position
textarea.selectionStart = textarea.selectionEnd = cursor;
}
wpLink.close();
textarea.focus();
},
mceUpdate: function() {
var link,
attrs = wpLink.getAttrs();
wpLink.close();
editor.focus();
if ( tinymce.isIE ) {
editor.selection.moveToBookmark( editor.windowManager.bookmark );
}
link = editor.dom.getParent( editor.selection.getNode(), 'a[href]' );
// If the values are empty, unlink and return
if ( ! attrs.href || attrs.href == 'http://' ) {
editor.execCommand( 'unlink' );
return;
}
if ( link ) {
editor.dom.setAttribs( link, attrs );
} else {
editor.execCommand( 'mceInsertLink', false, attrs );
}
// Move the cursor to the end of the selection
editor.selection.collapse();
},
updateFields: function( e, li, originalEvent ) {
inputs.url.val( li.children( '.item-permalink' ).val() );
inputs.title.val( li.hasClass( 'no-title' ) ? '' : li.children( '.item-title' ).text() );
if ( originalEvent && originalEvent.type == 'click' )
inputs.url.focus();
},
setDefaultValues: function() {
// Set URL and description to defaults.
// Leave the new tab setting as-is.
inputs.url.val( 'http://' );
inputs.title.val( '' );
// Update save prompt.
inputs.submit.val( wpLinkL10n.save );
},
searchInternalLinks: function() {
var t = $( this ), waiting,
search = t.val();
if ( search.length > 2 ) {
rivers.recent.hide();
rivers.search.show();
// Don't search if the keypress didn't change the title.
if ( wpLink.lastSearch == search )
return;
wpLink.lastSearch = search;
waiting = t.parent().find('.spinner').show();
rivers.search.change( search );
rivers.search.ajax( function() {
waiting.hide();
});
} else {
rivers.search.hide();
rivers.recent.show();
}
},
next: function() {
rivers.search.next();
rivers.recent.next();
},
prev: function() {
rivers.search.prev();
rivers.recent.prev();
},
keydown: function( event ) {
var fn, id,
key = $.ui.keyCode;
if ( key.ESCAPE === event.keyCode ) {
wpLink.close();
event.stopImmediatePropagation();
} else if ( key.TAB === event.keyCode ) {
id = event.target.id;
if ( id === 'wp-link-submit' && ! event.shiftKey ) {
inputs.close.focus();
event.preventDefault();
} else if ( id === 'wp-link-close' && event.shiftKey ) {
inputs.submit.focus();
event.preventDefault();
}
}
if ( event.keyCode !== key.UP && event.keyCode !== key.DOWN ) {
return;
}
fn = event.keyCode === key.UP ? 'prev' : 'next';
clearInterval( wpLink.keyInterval );
wpLink[ fn ]();
wpLink.keyInterval = setInterval( wpLink[ fn ], wpLink.keySensitivity );
event.preventDefault();
},
keyup: function( event ) {
var key = $.ui.keyCode;
if ( event.which === key.UP || event.which === key.DOWN ) {
clearInterval( wpLink.keyInterval );
event.preventDefault();
}
},
delayedCallback: function( func, delay ) {
var timeoutTriggered, funcTriggered, funcArgs, funcContext;
if ( ! delay )
return func;
setTimeout( function() {
if ( funcTriggered )
return func.apply( funcContext, funcArgs );
// Otherwise, wait.
timeoutTriggered = true;
}, delay );
return function() {
if ( timeoutTriggered )
return func.apply( this, arguments );
// Otherwise, wait.
funcArgs = arguments;
funcContext = this;
funcTriggered = true;
};
},
toggleInternalLinking: function() {
var visible = inputs.wrap.hasClass( 'search-panel-visible' );
inputs.wrap.toggleClass( 'search-panel-visible', ! visible );
setUserSetting( 'wplink', visible ? '0' : '1' );
inputs[ ! visible ? 'search' : 'url' ].focus();
}
};
River = function( element, search ) {
var self = this;
this.element = element;
this.ul = element.children( 'ul' );
this.contentHeight = element.children( '#link-selector-height' );
this.waiting = element.find('.river-waiting');
this.change( search );
this.refresh();
$( '#wp-link .query-results, #wp-link #link-selector' ).scroll( function() {
self.maybeLoad();
});
element.on( 'click', 'li', function( event ) {
self.select( $( this ), event );
});
};
$.extend( River.prototype, {
refresh: function() {
this.deselect();
this.visible = this.element.is( ':visible' );
},
show: function() {
if ( ! this.visible ) {
this.deselect();
this.element.show();
this.visible = true;
}
},
hide: function() {
this.element.hide();
this.visible = false;
},
// Selects a list item and triggers the river-select event.
select: function( li, event ) {
var liHeight, elHeight, liTop, elTop;
if ( li.hasClass( 'unselectable' ) || li == this.selected )
return;
this.deselect();
this.selected = li.addClass( 'selected' );
// Make sure the element is visible
liHeight = li.outerHeight();
elHeight = this.element.height();
liTop = li.position().top;
elTop = this.element.scrollTop();
if ( liTop < 0 ) // Make first visible element
this.element.scrollTop( elTop + liTop );
else if ( liTop + liHeight > elHeight ) // Make last visible element
this.element.scrollTop( elTop + liTop - elHeight + liHeight );
// Trigger the river-select event
this.element.trigger( 'river-select', [ li, event, this ] );
},
deselect: function() {
if ( this.selected )
this.selected.removeClass( 'selected' );
this.selected = false;
},
prev: function() {
if ( ! this.visible )
return;
var to;
if ( this.selected ) {
to = this.selected.prev( 'li' );
if ( to.length )
this.select( to );
}
},
next: function() {
if ( ! this.visible )
return;
var to = this.selected ? this.selected.next( 'li' ) : $( 'li:not(.unselectable):first', this.element );
if ( to.length )
this.select( to );
},
ajax: function( callback ) {
var self = this,
delay = this.query.page == 1 ? 0 : wpLink.minRiverAJAXDuration,
response = wpLink.delayedCallback( function( results, params ) {
self.process( results, params );
if ( callback )
callback( results, params );
}, delay );
this.query.ajax( response );
},
change: function( search ) {
if ( this.query && this._search == search )
return;
this._search = search;
this.query = new Query( search );
this.element.scrollTop( 0 );
},
process: function( results, params ) {
var list = '', alt = true, classes = '',
firstPage = params.page == 1;
if ( ! results ) {
if ( firstPage ) {
list += '<li class="unselectable"><span class="item-title"><em>' +
wpLinkL10n.noMatchesFound + '</em></span></li>';
}
} else {
$.each( results, function() {
classes = alt ? 'alternate' : '';
classes += this.title ? '' : ' no-title';
list += classes ? '<li class="' + classes + '">' : '<li>';
list += '<input type="hidden" class="item-permalink" value="' + this.permalink + '" />';
list += '<span class="item-title">';
list += this.title ? this.title : wpLinkL10n.noTitle;
list += '</span><span class="item-info">' + this.info + '</span></li>';
alt = ! alt;
});
}
this.ul[ firstPage ? 'html' : 'append' ]( list );
},
maybeLoad: function() {
var self = this,
el = this.element,
bottom = el.scrollTop() + el.height();
if ( ! this.query.ready() || bottom < this.contentHeight.height() - wpLink.riverBottomThreshold )
return;
setTimeout(function() {
var newTop = el.scrollTop(),
newBottom = newTop + el.height();
if ( ! self.query.ready() || newBottom < self.contentHeight.height() - wpLink.riverBottomThreshold )
return;
self.waiting.show();
el.scrollTop( newTop + self.waiting.outerHeight() );
self.ajax( function() {
self.waiting.hide();
});
}, wpLink.timeToTriggerRiver );
}
});
Query = function( search ) {
this.page = 1;
this.allLoaded = false;
this.querying = false;
this.search = search;
};
$.extend( Query.prototype, {
ready: function() {
return ! ( this.querying || this.allLoaded );
},
ajax: function( callback ) {
var self = this,
query = {
action : 'wp-link-ajax',
page : this.page,
'_ajax_linking_nonce' : inputs.nonce.val()
};
if ( this.search )
query.search = this.search;
this.querying = true;
$.post( ajaxurl, query, function( r ) {
self.page++;
self.querying = false;
self.allLoaded = ! r;
callback( r, query );
}, 'json' );
}
});
$( document ).ready( wpLink.init );
})( jQuery );