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Customize: Split out link `click.preview` and form `submit.preview` event handlers from anonymous functions into named methods on `wp.customize.Preview` for extensibility. 

See #30937.


git-svn-id: https://develop.svn.wordpress.org/trunk@38811 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Weston Ruter 2016-10-19 02:06:00 +00:00
parent 83b059aa19
commit 500041a4bc
1 changed files with 103 additions and 78 deletions
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181
src/wp-includes/js/customize-preview.js
View File

@ -105,88 +105,14 @@
preview.add( 'scheme', urlParser.protocol.replace( /:$/, '' ) );
preview.body = $( document.body );
preview.body.on( 'click.preview', 'a', function( event ) {
var link, isInternalJumpLink;
link = $( this );
// No-op if the anchor is not a link.
if ( _.isUndefined( link.attr( 'href' ) ) ) {
return;
}
isInternalJumpLink = ( '#' === link.attr( 'href' ).substr( 0, 1 ) );
// Allow internal jump links to behave normally without preventing default.
if ( isInternalJumpLink ) {
return;
}
// If the link is not previewable, prevent the browser from navigating to it.
if ( ! api.isLinkPreviewable( link[0] ) ) {
wp.a11y.speak( api.settings.l10n.linkUnpreviewable );
event.preventDefault();
return;
}
// If not in an iframe, then allow the link click to proceed normally since the state query params are added.
if ( ! api.settings.channel ) {
return;
}
// Prevent initiating navigating from click and instead rely on sending url message to pane.
event.preventDefault();
/*
* Note the shift key is checked so shift+click on widgets or
* nav menu items can just result on focusing on the corresponding
* control instead of also navigating to the URL linked to.
*/
if ( event.shiftKey ) {
return;
}
// Note: It's not relevant to send scroll because sending url message will have the same effect.
preview.send( 'url', link.prop( 'href' ) );
preview.handleLinkClick( event );
} );
preview.body.on( 'submit.preview', 'form', function( event ) {
var urlParser = document.createElement( 'a' );
urlParser.href = this.action;
// If the link is not previewable, prevent the browser from navigating to it.
if ( 'GET' !== this.method.toUpperCase() || ! api.isLinkPreviewable( urlParser ) ) {
wp.a11y.speak( api.settings.l10n.formUnpreviewable );
event.preventDefault();
return;
}
// If not in an iframe, then allow the form submission to proceed normally with the state inputs injected.
if ( ! api.settings.channel ) {
return;
}
/*
* If the default wasn't prevented already (in which case the form
* submission is already being handled by JS), and if it has a GET
* request method, then take the serialized form data and add it as
* a query string to the action URL and send this in a url message
* to the customizer pane so that it will be loaded. If the form's
* action points to a non-previewable URL, the customizer pane's
* previewUrl setter will reject it so that the form submission is
* a no-op, which is the same behavior as when clicking a link to an
* external site in the preview.
*/
if ( ! event.isDefaultPrevented() ) {
if ( urlParser.search.length > 1 ) {
urlParser.search += '&';
}
urlParser.search += $( this ).serialize();
api.preview.send( 'url', urlParser.href );
}
// Prevent default since navigation should be done via sending url message or via JS submit handler.
event.preventDefault();
});
preview.handleFormSubmit( event );
} );
preview.window = $( window );
@ -199,6 +125,105 @@
preview.window.scrollTop( distance );
});
}
},
/**
* Handle link clicks in preview.
*
* @since 4.7.0
*
* @param {jQuery.Event} event Event.
*/
handleLinkClick: function( event ) {
var preview = this, link, isInternalJumpLink;
link = $( event.target );
// No-op if the anchor is not a link.
if ( _.isUndefined( link.attr( 'href' ) ) ) {
return;
}
isInternalJumpLink = ( '#' === link.attr( 'href' ).substr( 0, 1 ) );
// Allow internal jump links to behave normally without preventing default.
if ( isInternalJumpLink ) {
return;
}
// If the link is not previewable, prevent the browser from navigating to it.
if ( ! api.isLinkPreviewable( link[0] ) ) {
wp.a11y.speak( api.settings.l10n.linkUnpreviewable );
event.preventDefault();
return;
}
// If not in an iframe, then allow the link click to proceed normally since the state query params are added.
if ( ! api.settings.channel ) {
return;
}
// Prevent initiating navigating from click and instead rely on sending url message to pane.
event.preventDefault();
/*
* Note the shift key is checked so shift+click on widgets or
* nav menu items can just result on focusing on the corresponding
* control instead of also navigating to the URL linked to.
*/
if ( event.shiftKey ) {
return;
}
// Note: It's not relevant to send scroll because sending url message will have the same effect.
preview.send( 'url', link.prop( 'href' ) );
},
/**
* Handle form submit.
*
* @since 4.7.0
*
* @param {jQuery.Event} event Event.
*/
handleFormSubmit: function( event ) {
var preview = this, urlParser, form;
urlParser = document.createElement( 'a' );
form = $( event.target );
urlParser.href = form.prop( 'action' );
// If the link is not previewable, prevent the browser from navigating to it.
if ( 'GET' !== form.prop( 'method' ).toUpperCase() || ! api.isLinkPreviewable( urlParser ) ) {
wp.a11y.speak( api.settings.l10n.formUnpreviewable );
event.preventDefault();
return;
}
// If not in an iframe, then allow the form submission to proceed normally with the state inputs injected.
if ( ! api.settings.channel ) {
return;
}
/*
* If the default wasn't prevented already (in which case the form
* submission is already being handled by JS), and if it has a GET
* request method, then take the serialized form data and add it as
* a query string to the action URL and send this in a url message
* to the customizer pane so that it will be loaded. If the form's
* action points to a non-previewable URL, the customizer pane's
* previewUrl setter will reject it so that the form submission is
* a no-op, which is the same behavior as when clicking a link to an
* external site in the preview.
*/
if ( ! event.isDefaultPrevented() ) {
if ( urlParser.search.length > 1 ) {
urlParser.search += '&';
}
urlParser.search += form.serialize();
preview.send( 'url', urlParser.href );
}
// Prevent default since navigation should be done via sending url message or via JS submit handler.
event.preventDefault();
}
});