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/**
* The "blockprotect" plugin. Adapted from the "placeholder" plugin.
*/
(function() {
var delim_o = '{';
var delim_c = '}';
var create_block = function(content) {
// fix nbsp's
content = content.replace(/ /gi, ' ');
// escape the content
var el = document.createElement('SPAN');
// IE8 compat
if( typeof(el.textContent) != 'undefined' ) {
el.textContent = content;
} else if( typeof(el.innerText) != 'undefined' ) {
el.innerText = content;
}
el.setAttribute('class', 'cke_blockprotect');
return el.outerHTML;
};
var block_writeHtml = function( element ) {
// to unescape the element contents, write it out as HTML,
// stick that into a SPAN element, and then extract the text
// content of that.
var inner_writer = new CKEDITOR.htmlParser.basicWriter;
element.writeChildrenHtml(inner_writer);
var el = document.createElement('SPAN');
el.innerHTML = inner_writer.getHtml();
if( typeof(el.textContent) != 'undefined' ) {
return el.textContent;
} else if( typeof(el.innerText) != 'undefined' ) {
return el.innerText;
}
};
var to_protected_html = function(data) {
var depth = 0;
var chunk = '';
var out = '';
var p = 0; // position in the string
while( 1 ) {
// find the next delimiter of either kind
var i = data.indexOf(delim_o, p);
var j = data.indexOf(delim_c, p);
if (i == -1 && j == -1) {
// then there are no more delimiters
break;
} else if ((i < j || j == -1) && i != -1) {
// next delimiter is an open
// push everything from current position to
// the delimiter
if ( i > p ) chunk += data.substr(p, i - p);
p = i + 1;
if ( depth == 0 ) {
// start of a protected block
out += chunk;
chunk = '';
}
chunk += delim_o;
depth++;
} else if ((j < i || i == -1) && j != -1) {
// next delimiter is a close
if ( j > p ) chunk += data.substr(p, j - p);
p = j + 1;
depth--;
chunk += delim_c
if ( depth == 0 ) {
// end of a protected block
out += create_block(chunk);
chunk = '';
} else if ( depth < 0 ) {
depth = 0;
}
} else {
// can't happen
}
}
// append any text after the last delimiter
if ( depth ) {
out += create_block(data.substr(p));
} else {
out += data.substr(p);
}
return out;
};
CKEDITOR.plugins.add( 'blockprotect', {
afterInit: function( editor ) {
CKEDITOR.addCss( '.cke_blockprotect' +
'{' +
'background-color: #ffff88;' +
( CKEDITOR.env.gecko ? 'cursor: default;' : '' ) +
'}'
);
// keep these from getting stripped out
editor.filter.allow('span(cke_blockprotect)',
'blockprotect', true);
// add filter at the front of toHtml
editor.on( 'toHtml',
function( evt ) {
evt.data.dataValue =
to_protected_html(evt.data.dataValue);
return evt;
},
this, null, 0
);
editor.dataProcessor.htmlFilter.addRules({
elements: {
span: function( element ) {
if ( element.className = 'cke_blockprotect' ) {
// defeat HTML escaping
var content = block_writeHtml(element);
element.writeHtml = function(writer, filter) {
writer.text(content);
}
}
} // span function
} // elements
});
}
}); // plugins.add
}) ();
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