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。
/**
* @file Functionality for the plugin install screens.
*
* @output wp-admin/js/plugin-install.js
*/
/* global tb_click, tb_remove, tb_position */
jQuery( function( $ ) {
var tbWindow,
$iframeBody,
$tabbables,
$firstTabbable,
$lastTabbable,
$focusedBefore = $(),
$uploadViewToggle = $( '.upload-view-toggle' ),
$wrap = $ ( '.wrap' ),
$body = $( document.body );
window.tb_position = function() {
var width = $( window ).width(),
H = $( window ).height() - ( ( 792 < width ) ? 60 : 20 ),
W = ( 792 < width ) ? 772 : width - 20;
tbWindow = $( '#TB_window' );
if ( tbWindow.length ) {
tbWindow.width( W ).height( H );
$( '#TB_iframeContent' ).width( W ).height( H );
tbWindow.css({
'margin-left': '-' + parseInt( ( W / 2 ), 10 ) + 'px'
});
if ( typeof document.body.style.maxWidth !== 'undefined' ) {
tbWindow.css({
'top': '30px',
'margin-top': '0'
});
}
}
return $( 'a.thickbox' ).each( function() {
var href = $( this ).attr( 'href' );
if ( ! href ) {
return;
}
href = href.replace( /&width=[0-9]+/g, '' );
href = href.replace( /&height=[0-9]+/g, '' );
$(this).attr( 'href', href + '&width=' + W + '&height=' + ( H ) );
});
};
$( window ).on( 'resize', function() {
tb_position();
});
/*
* Custom events: when a Thickbox iframe has loaded and when the Thickbox
* modal gets removed from the DOM.
*/
$body
.on( 'thickbox:iframe:loaded', tbWindow, function() {
/*
* Return if it's not the modal with the plugin details iframe. Other
* thickbox instances might want to load an iframe with content from
* an external domain. Avoid to access the iframe contents when we're
* not sure the iframe loads from the same domain.
*/
if ( ! tbWindow.hasClass( 'plugin-details-modal' ) ) {
return;
}
iframeLoaded();
})
.on( 'thickbox:removed', function() {
// Set focus back to the element that opened the modal dialog.
// Note: IE 8 would need this wrapped in a fake setTimeout `0`.
$focusedBefore.trigger( 'focus' );
});
function iframeLoaded() {
var $iframe = tbWindow.find( '#TB_iframeContent' );
// Get the iframe body.
$iframeBody = $iframe.contents().find( 'body' );
// Get the tabbable elements and handle the keydown event on first load.
handleTabbables();
// Set initial focus on the "Close" button.
$firstTabbable.trigger( 'focus' );
/*
* When the "Install" button is disabled (e.g. the Plugin is already installed)
* then we can't predict where the last focusable element is. We need to get
* the tabbable elements and handle the keydown event again and again,
* each time the active tab panel changes.
*/
$( '#plugin-information-tabs a', $iframeBody ).on( 'click', function() {
handleTabbables();
});
// Close the modal when pressing Escape.
$iframeBody.on( 'keydown', function( event ) {
if ( 27 !== event.which ) {
return;
}
tb_remove();
});
}
/*
* Get the tabbable elements and detach/attach the keydown event.
* Called after the iframe has fully loaded so we have all the elements we need.
* Called again each time a Tab gets clicked.
* @todo Consider to implement a WordPress general utility for this and don't use jQuery UI.
*/
function handleTabbables() {
var $firstAndLast;
// Get all the tabbable elements.
$tabbables = $( ':tabbable', $iframeBody );
// Our first tabbable element is always the "Close" button.
$firstTabbable = tbWindow.find( '#TB_closeWindowButton' );
// Get the last tabbable element.
$lastTabbable = $tabbables.last();
// Make a jQuery collection.
$firstAndLast = $firstTabbable.add( $lastTabbable );
// Detach any previously attached keydown event.
$firstAndLast.off( 'keydown.wp-plugin-details' );
// Attach again the keydown event on the first and last focusable elements.
$firstAndLast.on( 'keydown.wp-plugin-details', function( event ) {
constrainTabbing( event );
});
}
// Constrain tabbing within the plugin modal dialog.
function constrainTabbing( event ) {
if ( 9 !== event.which ) {
return;
}
if ( $lastTabbable[0] === event.target && ! event.shiftKey ) {
event.preventDefault();
$firstTabbable.trigger( 'focus' );
} else if ( $firstTabbable[0] === event.target && event.shiftKey ) {
event.preventDefault();
$lastTabbable.trigger( 'focus' );
}
}
/*
* Open the Plugin details modal. The event is delegated to get also the links
* in the plugins search tab, after the Ajax search rebuilds the HTML. It's
* delegated on the closest ancestor and not on the body to avoid conflicts
* with other handlers, see Trac ticket #43082.
*/
$( '.wrap' ).on( 'click', '.thickbox.open-plugin-details-modal', function( e ) {
// The `data-title` attribute is used only in the Plugin screens.
var title = $( this ).data( 'title' ) ?
wp.i18n.sprintf(
// translators: %s: Plugin name.
wp.i18n.__( 'Plugin: %s' ),
$( this ).data( 'title' )
) :
wp.i18n.__( 'Plugin details' );
e.preventDefault();
e.stopPropagation();
// Store the element that has focus before opening the modal dialog, i.e. the control which opens it.
$focusedBefore = $( this );
tb_click.call(this);
// Set ARIA role, ARIA label, and add a CSS class.
tbWindow
.attr({
'role': 'dialog',
'aria-label': wp.i18n.__( 'Plugin details' )
})
.addClass( 'plugin-details-modal' );
// Set title attribute on the iframe.
tbWindow.find( '#TB_iframeContent' ).attr( 'title', title );
});
/* Plugin install related JS */
$( '#plugin-information-tabs a' ).on( 'click', function( event ) {
var tab = $( this ).attr( 'name' );
event.preventDefault();
// Flip the tab.
$( '#plugin-information-tabs a.current' ).removeClass( 'current' );
$( this ).addClass( 'current' );
// Only show the fyi box in the description section, on smaller screen,
// where it's otherwise always displayed at the top.
if ( 'description' !== tab && $( window ).width() < 772 ) {
$( '#plugin-information-content' ).find( '.fyi' ).hide();
} else {
$( '#plugin-information-content' ).find( '.fyi' ).show();
}
// Flip the content.
$( '#section-holder div.section' ).hide(); // Hide 'em all.
$( '#section-' + tab ).show();
});
/*
* When a user presses the "Upload Plugin" button, show the upload form in place
* rather than sending them to the devoted upload plugin page.
* The `?tab=upload` page still exists for no-js support and for plugins that
* might access it directly. When we're in this page, let the link behave
* like a link. Otherwise we're in the normal plugin installer pages and the
* link should behave like a toggle button.
*/
if ( ! $wrap.hasClass( 'plugin-install-tab-upload' ) ) {
$uploadViewToggle
.attr({
role: 'button',
'aria-expanded': 'false'
})
.on( 'click', function( event ) {
event.preventDefault();
$body.toggleClass( 'show-upload-view' );
$uploadViewToggle.attr( 'aria-expanded', $body.hasClass( 'show-upload-view' ) );
});
}
});