www.gusucode.com > wordpress PHP博客系统英文版 v4.5.1PHP源码程序 > wordpress PHP博客系统英文版 v4.5.1/wordpress/wordpress/wp-includes/js/wplink.js
var wpLink;
( function( $, wpLinkL10n, wp ) {
var editor, searchTimer, River, Query, correctedURL, linkNode,
emailRegexp = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i,
urlRegexp = /^(https?|ftp):\/\/[A-Z0-9.-]+\.[A-Z]{2,4}[^ "]*$/i,
inputs = {},
rivers = {},
isTouch = ( 'ontouchend' in document );
function getLink() {
return linkNode || editor.dom.getParent( editor.selection.getNode(), 'a[href]' );
}
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' );
// Input
inputs.text = $( '#wp-link-text' );
inputs.url = $( '#wp-link-url' );
inputs.nonce = $( '#_ajax_linking_nonce' );
inputs.openInNewTab = $( '#wp-link-target' );
inputs.search = $( '#wp-link-search' );
// Build Rivers
rivers.search = new River( $( '#search-results' ) );
rivers.recent = new River( $( '#most-recent-results' ) );
rivers.elements = inputs.dialog.find( '.query-results' );
// Get search notice text
inputs.queryNotice = $( '#query-notice-message' );
inputs.queryNoticeTextDefault = inputs.queryNotice.find( '.query-notice-default' );
inputs.queryNoticeTextHint = inputs.queryNotice.find( '.query-notice-hint' );
// 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 button' ).click( function( event ) {
event.preventDefault();
wpLink.close();
});
rivers.elements.on( 'river-select', wpLink.updateFields );
// Display 'hint' message when search field or 'query-results' box are focused
inputs.search.on( 'focus.wplink', function() {
inputs.queryNoticeTextDefault.hide();
inputs.queryNoticeTextHint.removeClass( 'screen-reader-text' ).show();
} ).on( 'blur.wplink', function() {
inputs.queryNoticeTextDefault.show();
inputs.queryNoticeTextHint.addClass( 'screen-reader-text' ).hide();
} );
inputs.search.on( 'keyup input', function() {
window.clearTimeout( searchTimer );
searchTimer = window.setTimeout( function() {
wpLink.searchInternalLinks();
}, 500 );
});
inputs.url.on( 'paste', function() {
setTimeout( wpLink.correctURL, 0 );
} );
inputs.url.on( 'blur', wpLink.correctURL );
},
// If URL wasn't corrected last time and doesn't start with http:, https:, ? # or /, prepend http://
correctURL: function () {
var url = $.trim( inputs.url.val() );
if ( url && correctedURL !== url && ! /^(?:[a-z]+:|#|\?|\.|\/)/.test( url ) ) {
inputs.url.val( 'http://' + url );
correctedURL = url;
}
},
open: function( editorId, url, text, node ) {
var ed,
$body = $( document.body );
$body.addClass( 'modal-open' );
linkNode = node;
wpLink.range = null;
if ( editorId ) {
window.wpActiveEditor = editorId;
}
if ( ! window.wpActiveEditor ) {
return;
}
this.textarea = $( '#' + window.wpActiveEditor ).get( 0 );
if ( typeof window.tinymce !== 'undefined' ) {
// Make sure the link wrapper is the last element in the body,
// or the inline editor toolbar may show above the backdrop.
$body.append( inputs.backdrop, inputs.wrap );
ed = window.tinymce.get( window.wpActiveEditor );
if ( ed && ! ed.isHidden() ) {
editor = ed;
} else {
editor = null;
}
if ( editor && window.tinymce.isIE ) {
editor.windowManager.wplinkBookmark = editor.selection.getBookmark();
}
}
if ( ! wpLink.isMCE() && document.selection ) {
this.textarea.focus();
this.range = document.selection.createRange();
}
inputs.wrap.show();
inputs.backdrop.show();
wpLink.refresh( url, text );
$( document ).trigger( 'wplink-open', inputs.wrap );
},
isMCE: function() {
return editor && ! editor.isHidden();
},
refresh: function( url, text ) {
var linkText = '';
// Refresh rivers (clear links, check visibility)
rivers.search.refresh();
rivers.recent.refresh();
if ( wpLink.isMCE() ) {
wpLink.mceRefresh( url, text );
} else {
// For the Text editor the "Link text" field is always shown
if ( ! inputs.wrap.hasClass( 'has-text-field' ) ) {
inputs.wrap.addClass( 'has-text-field' );
}
if ( document.selection ) {
// Old IE
linkText = document.selection.createRange().text || text || '';
} else if ( typeof this.textarea.selectionStart !== 'undefined' &&
( this.textarea.selectionStart !== this.textarea.selectionEnd ) ) {
// W3C
text = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd ) || text || '';
}
inputs.text.val( text );
wpLink.setDefaultValues();
}
if ( isTouch ) {
// Close the onscreen keyboard
inputs.url.focus().blur();
} else {
// Focus the URL field and highlight its contents.
// If this is moved above the selection changes,
// IE will show a flashing cursor over the dialog.
window.setTimeout( function() {
inputs.url[0].select();
inputs.url.focus();
} );
}
// Load the most recent results if this is the first time opening the panel.
if ( ! rivers.recent.ul.children().length ) {
rivers.recent.ajax();
}
correctedURL = inputs.url.val().replace( /^http:\/\//, '' );
},
hasSelectedText: function( linkNode ) {
var node, nodes, i, html = editor.selection.getContent();
// Partial html and not a fully selected anchor element
if ( /</.test( html ) && ( ! /^<a [^>]+>[^<]+<\/a>$/.test( html ) || html.indexOf('href=') === -1 ) ) {
return false;
}
if ( linkNode ) {
nodes = linkNode.childNodes;
if ( nodes.length === 0 ) {
return false;
}
for ( i = nodes.length - 1; i >= 0; i-- ) {
node = nodes[i];
if ( node.nodeType != 3 && ! window.tinymce.dom.BookmarkManager.isBookmarkNode( node ) ) {
return false;
}
}
}
return true;
},
mceRefresh: function( searchStr, text ) {
var linkText, href,
linkNode = getLink(),
onlyText = this.hasSelectedText( linkNode );
if ( linkNode ) {
linkText = linkNode.innerText || linkNode.textContent;
href = editor.dom.getAttrib( linkNode, 'href' );
if ( ! $.trim( linkText ) ) {
linkText = text || '';
}
if ( searchStr && ( urlRegexp.test( searchStr ) || emailRegexp.test( searchStr ) ) ) {
href = searchStr;
}
if ( href !== '_wp_link_placeholder' ) {
inputs.url.val( href );
inputs.openInNewTab.prop( 'checked', '_blank' === editor.dom.getAttrib( linkNode, 'target' ) );
inputs.submit.val( wpLinkL10n.update );
} else {
this.setDefaultValues( linkText );
}
if ( searchStr && searchStr !== href ) {
// The user has typed something in the inline dialog. Trigger a search with it.
inputs.search.val( searchStr );
} else {
inputs.search.val( '' );
}
// Always reset the search
window.setTimeout( function() {
wpLink.searchInternalLinks();
} );
} else {
linkText = editor.selection.getContent({ format: 'text' }) || text || '';
this.setDefaultValues( linkText );
}
if ( onlyText ) {
inputs.text.val( linkText );
inputs.wrap.addClass( 'has-text-field' );
} else {
inputs.text.val( '' );
inputs.wrap.removeClass( 'has-text-field' );
}
},
close: function( reset ) {
$( document.body ).removeClass( 'modal-open' );
if ( reset !== 'noReset' ) {
if ( ! wpLink.isMCE() ) {
wpLink.textarea.focus();
if ( wpLink.range ) {
wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
wpLink.range.select();
}
} else {
if ( editor.plugins.wplink ) {
editor.plugins.wplink.close();
}
editor.focus();
}
}
inputs.backdrop.hide();
inputs.wrap.hide();
correctedURL = false;
$( document ).trigger( 'wplink-close', inputs.wrap );
},
getAttrs: function() {
wpLink.correctURL();
return {
href: $.trim( inputs.url.val() ),
target: inputs.openInNewTab.prop( 'checked' ) ? '_blank' : ''
};
},
buildHtml: function(attrs) {
var html = '<a href="' + attrs.href + '"';
if ( attrs.target ) {
html += ' target="' + attrs.target + '"';
}
return html + '>';
},
update: function() {
if ( wpLink.isMCE() ) {
wpLink.mceUpdate();
} else {
wpLink.htmlUpdate();
}
},
htmlUpdate: function() {
var attrs, text, html, begin, end, cursor, selection,
textarea = wpLink.textarea;
if ( ! textarea ) {
return;
}
attrs = wpLink.getAttrs();
text = inputs.text.val();
// If there's no href, return.
if ( ! attrs.href ) {
return;
}
html = wpLink.buildHtml(attrs);
// 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 + ( text || 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 = text || 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 && ! selection ) {
cursor -= 4;
}
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();
// Audible confirmation message when a link has been inserted in the Editor.
wp.a11y.speak( wpLinkL10n.linkInserted );
},
mceUpdate: function() {
var attrs = wpLink.getAttrs(),
link, text;
if ( window.tinymce.isIE && editor.windowManager.wplinkBookmark ) {
editor.selection.moveToBookmark( editor.windowManager.wplinkBookmark );
editor.windowManager.wplinkBookmark = null;
}
if ( ! attrs.href ) {
editor.execCommand( 'unlink' );
wpLink.close();
return;
}
link = getLink();
if ( inputs.wrap.hasClass( 'has-text-field' ) ) {
text = inputs.text.val() || attrs.href;
}
if ( link ) {
if ( text ) {
if ( 'innerText' in link ) {
link.innerText = text;
} else {
link.textContent = text;
}
}
// Not editing any more
attrs['data-wplink-edit'] = null;
editor.dom.setAttribs( link, attrs );
} else {
if ( text ) {
editor.selection.setNode( editor.dom.create( 'a', attrs, editor.dom.encode( text ) ) );
} else {
editor.execCommand( 'mceInsertLink', false, attrs );
}
}
wpLink.close( 'noReset' );
editor.focus();
editor.nodeChanged();
// Audible confirmation message when a link has been inserted in the Editor.
wp.a11y.speak( wpLinkL10n.linkInserted );
},
updateFields: function( e, li ) {
inputs.url.val( li.children( '.item-permalink' ).val() );
},
getUrlFromSelection: function( selection ) {
if ( ! selection ) {
if ( this.isMCE() ) {
selection = editor.selection.getContent({ format: 'text' });
} else if ( document.selection && wpLink.range ) {
selection = wpLink.range.text;
} else if ( typeof this.textarea.selectionStart !== 'undefined' ) {
selection = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd );
}
}
selection = $.trim( selection );
if ( selection && emailRegexp.test( selection ) ) {
// Selection is email address
return 'mailto:' + selection;
} else if ( selection && urlRegexp.test( selection ) ) {
// Selection is URL
return selection.replace( /&|�?38;/gi, '&' );
}
return '';
},
setDefaultValues: function( selection ) {
inputs.url.val( this.getUrlFromSelection( selection ) );
// Empty the search field and swap the "rivers".
inputs.search.val('');
wpLink.searchInternalLinks();
// Update save prompt.
inputs.submit.val( wpLinkL10n.save );
},
searchInternalLinks: function() {
var waiting,
search = inputs.search.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 = inputs.search.parent().find( '.spinner' ).addClass( 'is-active' );
rivers.search.change( search );
rivers.search.ajax( function() {
waiting.removeClass( 'is-active' );
});
} 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;
// Escape key.
if ( 27 === event.keyCode ) {
wpLink.close();
event.stopImmediatePropagation();
// Tab key.
} else if ( 9 === event.keyCode ) {
id = event.target.id;
// wp-link-submit must always be the last focusable element in the dialog.
// following focusable elements will be skipped on keyboard navigation.
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();
}
}
// Up Arrow and Down Arrow keys.
if ( 38 !== event.keyCode && 40 !== event.keyCode ) {
return;
}
if ( document.activeElement &&
( document.activeElement.id === 'link-title-field' || document.activeElement.id === 'url-field' ) ) {
return;
}
// Up Arrow key.
fn = 38 === event.keyCode ? 'prev' : 'next';
clearInterval( wpLink.keyInterval );
wpLink[ fn ]();
wpLink.keyInterval = setInterval( wpLink[ fn ], wpLink.keySensitivity );
event.preventDefault();
},
keyup: function( event ) {
// Up Arrow and Down Arrow keys.
if ( 38 === event.keyCode || 40 === event.keyCode ) {
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;
};
}
};
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 no-matches-found"><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.addClass( 'is-active' );
el.scrollTop( newTop + self.waiting.outerHeight() );
self.ajax( function() {
self.waiting.removeClass( 'is-active' );
});
}, 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( window.ajaxurl, query, function( r ) {
self.page++;
self.querying = false;
self.allLoaded = ! r;
callback( r, query );
}, 'json' );
}
});
$( document ).ready( wpLink.init );
})( jQuery, window.wpLinkL10n, window.wp );