/* global tinymce */
/**
* WordPress View plugin.
*/
tinymce.PluginManager.add( 'wpview', function( editor ) {
var selected,
Env = tinymce.Env,
VK = tinymce.util.VK,
TreeWalker = tinymce.dom.TreeWalker,
toRemove = false,
firstFocus = true,
_noop = function() { return false; },
isios = /iPad|iPod|iPhone/.test( navigator.userAgent ),
cursorInterval, lastKeyDownNode, setViewCursorTries, focus, execCommandView, execCommandBefore;
function getView( node ) {
return getParent( node, 'wpview-wrap' );
}
/**
* Returns the node or a parent of the node that has the passed className.
* Doing this directly is about 40% faster
*/
function getParent( node, className ) {
while ( node && node.parentNode ) {
if ( node.className && ( ' ' + node.className + ' ' ).indexOf( ' ' + className + ' ' ) !== -1 ) {
return node;
}
node = node.parentNode;
}
return false;
}
/**
* Get the text/shortcode string for a view.
*
* @param view The view wrapper's node
* @returns string The text/shoercode string of the view
*/
function getViewText( view ) {
if ( view = getView( view ) ) {
return window.decodeURIComponent( editor.dom.getAttrib( view, 'data-wpview-text' ) || '' );
}
return '';
}
/**
* Set the view's original text/shortcode string
*
* @param view The view wrapper's HTML id or node
* @param text The text string to be set
*/
function setViewText( view, text ) {
view = getView( view );
if ( view ) {
editor.dom.setAttrib( view, 'data-wpview-text', window.encodeURIComponent( text || '' ) );
return true;
}
return false;
}
function _stop( event ) {
event.stopPropagation();
}
function setViewCursor( before, view ) {
var location = before ? 'before' : 'after',
offset = before ? 0 : 1;
deselect();
editor.selection.setCursorLocation( editor.dom.select( '.wpview-selection-' + location, view )[0], offset );
editor.nodeChanged();
}
function handleEnter( view, before, key ) {
var dom = editor.dom,
padNode = dom.create( 'p' );
if ( ! ( Env.ie && Env.ie < 11 ) ) {
padNode.innerHTML = '<br data-mce-bogus="1">';
}
if ( before ) {
view.parentNode.insertBefore( padNode, view );
} else {
dom.insertAfter( padNode, view );
}
deselect();
if ( before && key === VK.ENTER ) {
setViewCursor( before, view );
} else {
editor.selection.setCursorLocation( padNode, 0 );
}
editor.nodeChanged();
}
function removeView( view ) {
// TODO: trigger an event to run a clean up function.
// Maybe `jQuery( view ).trigger( 'remove' );`?
editor.undoManager.transact( function() {
handleEnter( view );
editor.dom.remove( view );
});
}
function select( viewNode ) {
var clipboard,
dom = editor.dom;
// Bail if node is already selected.
if ( ! viewNode || viewNode === selected ) {
return;
}
// Make sure that the editor is focused.
// It is possible that the editor is not focused when the mouse event fires
// without focus, the selection will not work properly.
editor.getBody().focus();
deselect();
selected = viewNode;
dom.setAttrib( viewNode, 'data-mce-selected', 1 );
clipboard = dom.create( 'div', {
'class': 'wpview-clipboard',
'contenteditable': 'true'
}, getViewText( viewNode ) );
editor.dom.select( '.wpview-body', viewNode )[0].appendChild( clipboard );
// Both of the following are necessary to prevent manipulating the selection/focus
dom.bind( clipboard, 'beforedeactivate focusin focusout', _stop );
dom.bind( selected, 'beforedeactivate focusin focusout', _stop );
// select the hidden div
if ( isios ) {
editor.selection.select( clipboard );
} else {
editor.selection.select( clipboard, true );
}
editor.nodeChanged();
editor.fire( 'wpview-selected', viewNode );
}
/**
* Deselect a selected view and remove clipboard
*/
function deselect() {
var clipboard,
dom = editor.dom;
if ( selected ) {
clipboard = editor.dom.select( '.wpview-clipboard', selected )[0];
dom.unbind( clipboard );
dom.remove( clipboard );
dom.unbind( selected, 'beforedeactivate focusin focusout click mouseup', _stop );
dom.setAttrib( selected, 'data-mce-selected', null );
}
selected = null;
}
// Check if the `wp.mce` API exists.
if ( typeof wp === 'undefined' || ! wp.mce ) {
return {
getViewText: _noop,
setViewText: _noop,
getView: _noop
};
}
// Remove the content of view wrappers from HTML string
function emptyViews( content ) {
return content.replace(/<div[^>]+data-wpview-text=\"([^"]+)"[^>]*>[\s\S]+?wpview-selection-after[^>]+>(?: |\u00a0)*<\/p><\/div>/g, '$1' );
}
// Prevent adding undo levels on changes inside a view wrapper
editor.on( 'BeforeAddUndo', function( event ) {
if ( event.lastLevel && emptyViews( event.level.content ) === emptyViews( event.lastLevel.content ) ) {
event.preventDefault();
}
});
// When the editor's content changes, scan the new content for
// matching view patterns, and transform the matches into
// view wrappers.
editor.on( 'BeforeSetContent', function( event ) {
var node;
if ( ! event.content ) {
return;
}
if ( selected ) {
removeView( selected );
}
node = editor.selection.getNode();
// When a url is pasted, only try to embed it when pasted in an empty paragrapgh.
if ( event.content.match( /^\s*(https?:\/\/[^\s"]+)\s*$/i ) &&
( node.nodeName !== 'P' || node.parentNode !== editor.getBody() || ! editor.dom.isEmpty( node ) ) ) {
return;
}
event.content = wp.mce.views.toViews( event.content );
});
// When the editor's content has been updated and the DOM has been
// processed, render the views in the document.
editor.on( 'SetContent', function() {
wp.mce.views.render();
});
// Set the cursor before or after a view when clicking next to it.
editor.on( 'click', function( event ) {
var x = event.clientX,
y = event.clientY,
body = editor.getBody(),
bodyRect = body.getBoundingClientRect(),
first = body.firstChild,
firstRect = first.getBoundingClientRect(),
last = body.lastChild,
lastRect = last.getBoundingClientRect(),
view;
if ( y < firstRect.top && ( view = getView( first ) ) ) {
setViewCursor( true, view );
event.preventDefault();
} else if ( y > lastRect.bottom && ( view = getView( last ) ) ) {
setViewCursor( false, view );
event.preventDefault();
} else {
tinymce.each( editor.dom.select( '.wpview-wrap' ), function( view ) {
var rect = view.getBoundingClientRect();
if ( y >= rect.top && y <= rect.bottom ) {
if ( x < bodyRect.left ) {
setViewCursor( true, view );
event.preventDefault();
} else if ( x > bodyRect.right ) {
setViewCursor( false, view );
event.preventDefault();
}
return;
}
});
}
});
editor.on( 'init', function() {
var scrolled = false,
selection = editor.selection,
MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
// When a view is selected, ensure content that is being pasted
// or inserted is added to a text node (instead of the view).
editor.on( 'BeforeSetContent', function() {
var walker, target,
view = getView( selection.getNode() );
// If the selection is not within a view, bail.
if ( ! view ) {
return;
}
if ( ! view.nextSibling || getView( view.nextSibling ) ) {
// If there are no additional nodes or the next node is a
// view, create a text node after the current view.
target = editor.getDoc().createTextNode('');
editor.dom.insertAfter( target, view );
} else {
// Otherwise, find the next text node.
walker = new TreeWalker( view.nextSibling, view.nextSibling );
target = walker.next();
}
// Select the `target` text node.
selection.select( target );
selection.collapse( true );
});
editor.dom.bind( editor.getDoc(), 'touchmove', function() {
scrolled = true;
});
editor.on( 'mousedown mouseup click touchend', function( event ) {
var view = getView( event.target );
firstFocus = false;
// Contain clicks inside the view wrapper
if ( view ) {
event.stopImmediatePropagation();
event.preventDefault();
if ( ( event.type === 'touchend' || event.type === 'mousedown' ) && ! event.metaKey && ! event.ctrlKey ) {
if ( editor.dom.hasClass( event.target, 'edit' ) ) {
wp.mce.views.edit( view );
editor.focus();
return false;
} else if ( editor.dom.hasClass( event.target, 'remove' ) ) {
removeView( view );
return false;
}
}
if ( event.type === 'touchend' && scrolled ) {
scrolled = false;
} else {
select( view );
}
// Returning false stops the ugly bars from appearing in IE11 and stops the view being selected as a range in FF.
// Unfortunately, it also inhibits the dragging of views to a new location.
return false;
} else {
if ( event.type === 'touchend' || event.type === 'mousedown' ) {
deselect();
}
}
if ( event.type === 'touchend' && scrolled ) {
scrolled = false;
}
}, true );
if ( MutationObserver ) {
new MutationObserver( function() {
editor.fire( 'wp-body-class-change' );
} )
.observe( editor.getBody(), {
attributes: true,
attributeFilter: ['class']
} );
}
});
editor.on( 'PreProcess', function( event ) {
// Empty the wpview wrap nodes
tinymce.each( editor.dom.select( 'div[data-wpview-text]', event.node ), function( node ) {
node.textContent = node.innerText = '\u00a0';
});
});
editor.on( 'PostProcess', function( event ) {
if ( event.content ) {
event.content = event.content.replace( /<div [^>]*?data-wpview-text="([^"]*)"[^>]*>[\s\S]*?<\/div>/g, function( match, shortcode ) {
if ( shortcode ) {
return '<p>' + window.decodeURIComponent( shortcode ) + '</p>';
}
return ''; // If error, remove the view wrapper
});
}
});
// Excludes arrow keys, delete, backspace, enter, space bar.
// Ref: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent.keyCode
function isSpecialKey( key ) {
return ( ( key <= 47 && key !== VK.SPACEBAR && key !== VK.ENTER && key !== VK.DELETE && key !== VK.BACKSPACE && ( key < 37 || key > 40 ) ) ||
key >= 224 || // OEM or non-printable
( key >= 144 && key <= 150 ) || // Num Lock, Scroll Lock, OEM
( key >= 91 && key <= 93 ) || // Windows keys
( key >= 112 && key <= 135 ) ); // F keys
}
// (De)select views when arrow keys are used to navigate the content of the editor.
editor.on( 'keydown', function( event ) {
var key = event.keyCode,
dom = editor.dom,
selection = editor.selection,
node, view, cursorBefore, cursorAfter,
range, clonedRange, tempRange;
if ( selected ) {
// Ignore key presses that involve the command or control key, but continue when in combination with backspace or v.
// Also ignore the F# keys.
if ( ( ( event.metaKey || event.ctrlKey ) && key !== VK.BACKSPACE && key !== 86 ) || ( key >= 112 && key <= 123 ) ) {
// Remove the view when pressing cmd/ctrl+x on keyup, otherwise the browser can't copy the content.
if ( ( event.metaKey || event.ctrlKey ) && key === 88 ) {
toRemove = selected;
}
return;
}
view = getView( selection.getNode() );
// If the caret is not within the selected view, deselect the view and bail.
if ( view !== selected ) {
deselect();
return;
}
if ( key === VK.LEFT ) {
setViewCursor( true, view );
event.preventDefault();
} else if ( key === VK.UP ) {
if ( view.previousSibling ) {
if ( getView( view.previousSibling ) ) {
setViewCursor( true, view.previousSibling );
} else {
deselect();
selection.select( view.previousSibling, true );
selection.collapse();
}
} else {
setViewCursor( true, view );
}
event.preventDefault();
} else if ( key === VK.RIGHT ) {
setViewCursor( false, view );
event.preventDefault();
} else if ( key === VK.DOWN ) {
if ( view.nextSibling ) {
if ( getView( view.nextSibling ) ) {
setViewCursor( false, view.nextSibling );
} else {
deselect();
selection.setCursorLocation( view.nextSibling, 0 );
}
} else {
setViewCursor( false, view );
}
event.preventDefault();
// Ignore keys that don't insert anything.
} else if ( ! isSpecialKey( key ) ) {
removeView( selected );
if ( key === VK.ENTER || key === VK.DELETE || key === VK.BACKSPACE ) {
event.preventDefault();
}
}
} else {
if ( event.metaKey || event.ctrlKey || ( key >= 112 && key <= 123 ) ) {
return;
}
node = selection.getNode();
lastKeyDownNode = node;
view = getView( node );
// Make sure we don't delete part of a view.
// If the range ends or starts with the view, we'll need to trim it.
if ( ! selection.isCollapsed() ) {
range = selection.getRng();
if ( view = getView( range.endContainer ) ) {
clonedRange = range.cloneRange();
selection.select( view.previousSibling, true );
selection.collapse();
tempRange = selection.getRng();
clonedRange.setEnd( tempRange.endContainer, tempRange.endOffset );
selection.setRng( clonedRange );
} else if ( view = getView( range.startContainer ) ) {
clonedRange = range.cloneRange();
clonedRange.setStart( view.nextSibling, 0 );
selection.setRng( clonedRange );
}
}
if ( ! view ) {
// Make sure we don't eat any content.
if ( event.keyCode === VK.BACKSPACE ) {
if ( editor.dom.isEmpty( node ) ) {
if ( view = getView( node.previousSibling ) ) {
setViewCursor( false, view );
editor.dom.remove( node );
event.preventDefault();
}
} else if ( ( range = selection.getRng() ) &&
range.startOffset === 0 &&
range.endOffset === 0 &&
( view = getView( node.previousSibling ) ) ) {
setViewCursor( false, view );
event.preventDefault();
}
}
return;
}
if ( ! ( ( cursorBefore = dom.hasClass( view, 'wpview-selection-before' ) ) ||
( cursorAfter = dom.hasClass( view, 'wpview-selection-after' ) ) ) ) {
return;
}
if ( isSpecialKey( key ) ) {
// ignore
return;
}
if ( ( cursorAfter && key === VK.UP ) || ( cursorBefore && key === VK.BACKSPACE ) ) {
if ( view.previousSibling ) {
if ( getView( view.previousSibling ) ) {
setViewCursor( false, view.previousSibling );
} else {
if ( dom.isEmpty( view.previousSibling ) && key === VK.BACKSPACE ) {
dom.remove( view.previousSibling );
} else {
selection.select( view.previousSibling, true );
selection.collapse();
}
}
} else {
setViewCursor( true, view );
}
event.preventDefault();
} else if ( cursorAfter && ( key === VK.DOWN || key === VK.RIGHT ) ) {
if ( view.nextSibling ) {
if ( getView( view.nextSibling ) ) {
setViewCursor( key === VK.RIGHT, view.nextSibling );
} else {
selection.setCursorLocation( view.nextSibling, 0 );
}
}
event.preventDefault();
} else if ( cursorBefore && ( key === VK.UP || key === VK.LEFT ) ) {
if ( view.previousSibling ) {
if ( getView( view.previousSibling ) ) {
setViewCursor( key === VK.UP, view.previousSibling );
} else {
selection.select( view.previousSibling, true );
selection.collapse();
}
}
event.preventDefault();
} else if ( cursorBefore && key === VK.DOWN ) {
if ( view.nextSibling ) {
if ( getView( view.nextSibling ) ) {
setViewCursor( true, view.nextSibling );
} else {
selection.setCursorLocation( view.nextSibling, 0 );
}
} else {
setViewCursor( false, view );
}
event.preventDefault();
} else if ( ( cursorAfter && key === VK.LEFT ) || ( cursorBefore && key === VK.RIGHT ) ) {
select( view );
event.preventDefault();
} else if ( cursorAfter && key === VK.BACKSPACE ) {
removeView( view );
event.preventDefault();
} else if ( cursorAfter ) {
handleEnter( view );
} else if ( cursorBefore ) {
handleEnter( view , true, key );
}
if ( key === VK.ENTER ) {
event.preventDefault();
}
}
});
editor.on( 'keyup', function() {
if ( toRemove ) {
removeView( toRemove );
toRemove = false;
}
});
editor.on( 'focus', function() {
var view;
focus = true;
editor.dom.addClass( editor.getBody(), 'has-focus' );
// Edge case: show the fake caret when the editor is focused for the first time
// and the first element is a view.
if ( firstFocus && ( view = getView( editor.getBody().firstChild ) ) ) {
setViewCursor( true, view );
}
firstFocus = false;
} );
editor.on( 'blur', function() {
focus = false;
editor.dom.removeClass( editor.getBody(), 'has-focus' );
} );
editor.on( 'NodeChange', function( event ) {
var dom = editor.dom,
views = editor.dom.select( '.wpview-wrap' ),
className = event.element.className,
view = getView( event.element ),
lKDN = lastKeyDownNode;
lastKeyDownNode = false;
clearInterval( cursorInterval );
// This runs a lot and is faster than replacing each class separately
tinymce.each( views, function ( view ) {
if ( view.className ) {
view.className = view.className.replace( / ?\bwpview-(?:selection-before|selection-after|cursor-hide)\b/g, '' );
}
});
if ( focus && view ) {
if ( ( className === 'wpview-selection-before' || className === 'wpview-selection-after' ) &&
editor.selection.isCollapsed() ) {
setViewCursorTries = 0;
deselect();
// Make sure the cursor arrived in the right node.
// This is necessary for Firefox.
if ( lKDN === view.previousSibling ) {
setViewCursor( true, view );
return;
} else if ( lKDN === view.nextSibling ) {
setViewCursor( false, view );
return;
}
dom.addClass( view, className );
cursorInterval = setInterval( function() {
if ( dom.hasClass( view, 'wpview-cursor-hide' ) ) {
dom.removeClass( view, 'wpview-cursor-hide' );
} else {
dom.addClass( view, 'wpview-cursor-hide' );
}
}, 500 );
// If the cursor lands anywhere else in the view, set the cursor before it.
// Only try this once to prevent a loop. (You never know.)
} else if ( ! getParent( event.element, 'wpview-clipboard' ) && ! setViewCursorTries ) {
deselect();
setViewCursorTries++;
setViewCursor( true, view );
}
}
});
editor.on( 'BeforeExecCommand', function() {
var node = editor.selection.getNode(),
view;
if ( node && ( ( execCommandBefore = node.className === 'wpview-selection-before' ) || node.className === 'wpview-selection-after' ) && ( view = getView( node ) ) ) {
handleEnter( view, execCommandBefore );
execCommandView = view;
}
});
editor.on( 'ExecCommand', function() {
var toSelect, node;
if ( selected ) {
toSelect = selected;
deselect();
select( toSelect );
}
if ( execCommandView ) {
node = execCommandView[ execCommandBefore ? 'previousSibling' : 'nextSibling' ];
if ( node && node.nodeName === 'P' && editor.dom.isEmpty( node ) ) {
editor.dom.remove( node );
setViewCursor( execCommandBefore, execCommandView );
}
execCommandView = false;
}
});
editor.on( 'ResolveName', function( event ) {
if ( editor.dom.hasClass( event.target, 'wpview-wrap' ) ) {
event.name = editor.dom.getAttrib( event.target, 'data-wpview-type' ) || 'wpview';
event.stopPropagation();
} else if ( getView( event.target ) ) {
event.preventDefault();
event.stopPropagation();
}
});
return {
getViewText: getViewText,
setViewText: setViewText,
getView: getView
};
});