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Code Issues Releases Wiki Activity

Added useSideBySideListener avoid duplicate cm update

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This commit is contained in:
7cat 2015-12-19 06:25:47 +08:00
parent e96fddffcb
commit e27a0933a3
1 changed files with 8 additions and 9 deletions
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17
src/js/simplemde.js
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@ -333,7 +333,7 @@ function toggleSideBySide(editor) {
var wrapper = cm.getWrapperElement();
var preview = wrapper.nextSibling;
var toolbarButton = editor.toolbarElements["side-by-side"];
var toggleOn = false;
var useSideBySideListener = false;
if(/editor-preview-active-side/.test(preview.className)) {
preview.className = preview.className.replace(
/\s*editor-preview-active-side\s*/g, ""
@ -351,7 +351,7 @@ function toggleSideBySide(editor) {
}, 1);
toolbarButton.className += " active";
wrapper.className += " CodeMirror-sided";
toggleOn = true;
useSideBySideListener = true;
}
// Hide normal preview if active
@ -366,20 +366,19 @@ function toggleSideBySide(editor) {
toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, "");
}
var renderfunc = function() {
var sideBySideRenderingFunction = function() {
preview.innerHTML = editor.options.previewRender(editor.value(), preview);
};
//register the function it to cm object it can be reffered by next toggle.
if(!cm.renderfunc) {
cm.renderfunc = renderfunc;
if(!cm.sideBySideRenderingFunction) {
cm.sideBySideRenderingFunction = sideBySideRenderingFunction;
}
//if toggle off should remove the old listener avoid register a new listener each click 'toggleSideBySide' button
if(toggleOn) {
preview.innerHTML = editor.options.previewRender(editor.value(), preview);
cm.on("update", cm.renderfunc);
cm.on("update", cm.sideBySideRenderingFunction);
} else {
cm.off("update", cm.renderfunc);
cm.off("update", cm.sideBySideRenderingFunction);
}
}