As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
/**
* @output wp-includes/js/wplink.js
*/
/* global wpLink */
( function( $, wpLinkL10n, wp ) {
var editor, searchTimer, River, Query, correctedURL,
emailRegexp = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,63}$/i,
urlRegexp = /^(https?|ftp):\/\/[A-Z0-9.-]+\.[A-Z]{2,63}[^ "]*$/i,
inputs = {},
rivers = {},
isTouch = ( 'ontouchend' in document );
function getLink() {
if ( editor ) {
return editor.$( 'a[data-wplink-edit="true"]' );
}
return null;
}
window.wpLink = {
timeToTriggerRiver: 150,
minRiverAJAXDuration: 200,
riverBottomThreshold: 5,
keySensitivity: 100,
lastSearch: '',
textarea: '',
modalOpen: false,
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.on( 'keydown', wpLink.keydown );
inputs.dialog.on( 'keyup', wpLink.keyup );
inputs.submit.on( 'click', function( event ) {
event.preventDefault();
wpLink.update();
});
inputs.close.add( inputs.backdrop ).add( '#wp-link-cancel button' ).on( '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 = inputs.url.val().trim();
if ( url && correctedURL !== url && ! /^(?:[a-z]+:|#|\?|\.|\/)/.test( url ) ) {
inputs.url.val( 'http://' + url );
correctedURL = url;
}
},
open: function( editorId, url, text ) {
var ed,
$body = $( document.body );
$( '#wpwrap' ).attr( 'aria-hidden', 'true' );
$body.addClass( 'modal-open' );
wpLink.modalOpen = true;
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 ( ! wpLink.isMCE() && document.selection ) {
this.textarea.focus();
this.range = document.selection.createRange();
}
inputs.wrap.show();
inputs.backdrop.show();
wpLink.refresh( url, text );
$( document ).trigger( 'wplink-open', inputs.wrap );
},
isMCE: function() {
return editor && ! editor.isHidden();
},
refresh: function( url, text ) {
var linkText = '';
// Refresh rivers (clear links, check visibility).
rivers.search.refresh();
rivers.recent.refresh();
if ( wpLink.isMCE() ) {
wpLink.mceRefresh( url, text );
} else {
// For the Code editor the "Link text" field is always shown.
if ( ! inputs.wrap.hasClass( 'has-text-field' ) ) {
inputs.wrap.addClass( 'has-text-field' );
}
if ( document.selection ) {
// Old IE.
linkText = document.selection.createRange().text || text || '';
} else if ( typeof this.textarea.selectionStart !== 'undefined' &&
( this.textarea.selectionStart !== this.textarea.selectionEnd ) ) {
// W3C.
text = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd ) || text || '';
}
inputs.text.val( text );
wpLink.setDefaultValues();
}
if ( isTouch ) {
// Close the onscreen keyboard.
inputs.url.trigger( 'focus' ).trigger( 'blur' );
} else {
/*
* Focus the URL field and highlight its contents.
* If this is moved above the selection changes,
* IE will show a flashing cursor over the dialog.
*/
window.setTimeout( function() {
inputs.url[0].select();
inputs.url.trigger( 'focus' );
} );
}
// Load the most recent results if this is the first time opening the panel.
if ( ! rivers.recent.ul.children().length ) {
rivers.recent.ajax();
}
correctedURL = inputs.url.val().replace( /^http:\/\//, '' );
},
hasSelectedText: function( linkNode ) {
var node, nodes, i, html = editor.selection.getContent();
// Partial html and not a fully selected anchor element.
if ( /</.test( html ) && ( ! /^<a [^>]+>[^<]+<\/a>$/.test( html ) || html.indexOf('href=') === -1 ) ) {
return false;
}
if ( linkNode.length ) {
nodes = linkNode[0].childNodes;
if ( ! nodes || ! nodes.length ) {
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.length ) {
linkText = linkNode.text();
href = linkNode.attr( 'href' );
if ( ! linkText.trim() ) {
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' === linkNode.attr( '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' );
$( '#wpwrap' ).removeAttr( 'aria-hidden' );
wpLink.modalOpen = false;
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: inputs.url.val().trim(),
target: inputs.openInNewTab.prop( 'checked' ) ? '_blank' : null
};
},
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();
var parser = document.createElement( 'a' );
parser.href = attrs.href;
if ( 'javascript:' === parser.protocol || 'data:' === parser.protocol ) { // jshint ignore:line
attrs.href = '';
}
// 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();
$( textarea ).trigger( 'change' );
// 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, hasText;
var parser = document.createElement( 'a' );
parser.href = attrs.href;
if ( 'javascript:' === parser.protocol || 'data:' === parser.protocol ) { // jshint ignore:line
attrs.href = '';
}
if ( ! attrs.href ) {
editor.execCommand( 'unlink' );
wpLink.close();
return;
}
$link = getLink();
editor.undoManager.transact( function() {
if ( ! $link.length ) {
editor.execCommand( 'mceInsertLink', false, { href: '_wp_link_placeholder', 'data-wp-temp-link': 1 } );
$link = editor.$( 'a[data-wp-temp-link="1"]' ).removeAttr( 'data-wp-temp-link' );
hasText = $link.text().trim();
}
if ( ! $link.length ) {
editor.execCommand( 'unlink' );
} else {
if ( inputs.wrap.hasClass( 'has-text-field' ) ) {
text = inputs.text.val();
if ( text ) {
$link.text( text );
} else if ( ! hasText ) {
$link.text( attrs.href );
}
}
attrs['data-wplink-edit'] = null;
attrs['data-mce-href'] = attrs.href;
$link.attr( attrs );
}
} );
wpLink.close( 'noReset' );
editor.focus();
if ( $link.length ) {
editor.selection.select( $link[0] );
if ( editor.plugins.wplink ) {
editor.plugins.wplink.checkLink( $link[0] );
}
}
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() );
if ( inputs.wrap.hasClass( 'has-text-field' ) && ! inputs.text.val() ) {
inputs.text.val( li.children( '.item-title' ).text() );
}
},
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 = selection || '';
selection = selection.trim();
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() || '',
minInputLength = parseInt( wpLinkL10n.minInputLength, 10 ) || 3;
if ( search.length >= minInputLength ) {
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.trigger( 'focus' );
event.preventDefault();
} else if ( id === 'wp-link-close' && event.shiftKey ) {
inputs.submit.trigger( 'focus' );
event.preventDefault();
}
}
// Up Arrow and Down Arrow keys.
if ( event.shiftKey || ( 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' ).on( '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' );
}
});
$( wpLink.init );
})( jQuery, window.wpLinkL10n, window.wp );