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add Editor characterFilter option #29

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add Editor characterFilter option #29

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18 changes: 10 additions & 8 deletions scripts/app/modules/standoff-properties-editor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -980,6 +980,14 @@
contextMenuActivated: event.contextMenuActivated,
contextMenuDeactivated: event.contextMenuDeactivated,
};
// this filter function will be called for every character processed either when binding a text
// or when text gets pasted into the editor container
// return true to process the character or false to ignore it
this.characterFilter = cons.characterFilter ||
function(charCode) {
// in the default configuration ignore the LINE_FEED characters
return charCode !== LINE_FEED;
};
this.keyDownFilter = cons.keyDownFilter ||
function(key) {
// see http://cherrytree.at/misc/vk.htm
Expand Down Expand Up @@ -2486,24 +2494,18 @@
Editor.prototype.populateContainer = function (text) {
var frag = this.textToDocumentFragment(text);
this.container.appendChild(frag);
// TODO: fire onCharacterAdded events here, so that this is consistent with handleOnPasteEvent
};
Editor.prototype.textToDocumentFragment = function (text) {
var len = text.length, i = 0;
var skip = [LINE_FEED];
var frag = document.createDocumentFragment();
while (len--) {
var c = text[i++];
var code = c.charCodeAt();
if (skip.indexOf(code) >= 0) {
if (!this.characterFilter(code)) {
continue;
}
var span = this.newSpan(c);
//if (this.onCharacterAdded) {
// this.onCharactedAdded(span, this);
//}
if (code == SPACE) {
// span.textContent = String.fromCharCode(160);
}
this.handleSpecialChars(span, code);
frag.appendChild(span);
}
Expand Down