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Added useSideBySideListener avoid duplicate cm update
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@ -333,7 +333,7 @@ function toggleSideBySide(editor) {
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var wrapper = cm.getWrapperElement();
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var preview = wrapper.nextSibling;
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var toolbarButton = editor.toolbarElements["side-by-side"];
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var toggleOn = false;
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var useSideBySideListener = false;
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if(/editor-preview-active-side/.test(preview.className)) {
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preview.className = preview.className.replace(
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/\s*editor-preview-active-side\s*/g, ""
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@ -351,7 +351,7 @@ function toggleSideBySide(editor) {
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}, 1);
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toolbarButton.className += " active";
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wrapper.className += " CodeMirror-sided";
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toggleOn = true;
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useSideBySideListener = true;
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}
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// Hide normal preview if active
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@ -366,20 +366,19 @@ function toggleSideBySide(editor) {
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toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, "");
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}
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var renderfunc = function() {
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var sideBySideRenderingFunction = function() {
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preview.innerHTML = editor.options.previewRender(editor.value(), preview);
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};
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//register the function it to cm object it can be reffered by next toggle.
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if(!cm.renderfunc) {
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cm.renderfunc = renderfunc;
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if(!cm.sideBySideRenderingFunction) {
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cm.sideBySideRenderingFunction = sideBySideRenderingFunction;
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}
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//if toggle off should remove the old listener avoid register a new listener each click 'toggleSideBySide' button
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if(toggleOn) {
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preview.innerHTML = editor.options.previewRender(editor.value(), preview);
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cm.on("update", cm.renderfunc);
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cm.on("update", cm.sideBySideRenderingFunction);
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} else {
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cm.off("update", cm.renderfunc);
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cm.off("update", cm.sideBySideRenderingFunction);
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}
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}
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