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TiddlyWiki5
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Improve garbage collection of external windows 

Now we remove event listeners when a window is closed
print-window-tiddler
Jermolene 2015-05-02 17:22:53 +01:00
rodzic 7866f9b2de
commit 8708f817fa
1 zmienionych plików z 18 dodań i 15 usunięć
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33
core/modules/startup/windows.js
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@ -21,7 +21,8 @@ exports.synchronous = true;
exports.startup = function() {
$tw.rootWidget.addEventListener("tm-open-window",function(event) {
// Get the parameters
var title = event.param || event.tiddlerTitle,
var refreshHandler,
title = event.param || event.tiddlerTitle,
paramObject = event.paramObject || {},
template = paramObject.template || "$:/core/ui/ViewTemplate/body",
width = paramObject.width || "700",
@ -29,14 +30,16 @@ exports.startup = function() {
// Open the window
var srcWindow = window.open("","external-" + title,"width=" + width + ",height=" + height),
srcDocument = srcWindow.document;
srcWindow.onclose = function(event) {
console.log("closing popup");
};
srcWindow.addEventListener("close",function(event) {
console.log("closing2 popup");
},false);
// Check for reopening the same window
if(srcWindow.haveInitialisedWindow) {
return;
}
// Initialise the document
srcDocument.write("<html><head></head><body class='tc-body'></body></html>");
srcDocument.close();
srcWindow.addEventListener("beforeunload",function(event) {
$tw.wiki.removeEventListener("change",refreshHandler);
},false);
// Set up the styles
var styleWidgetNode = $tw.wiki.makeTranscludeWidget("$:/core/ui/PageStylesheet",{document: $tw.fakeDocument}),
styleContainer = $tw.fakeDocument.createElement("style");
@ -44,19 +47,19 @@ exports.startup = function() {
var styleElement = srcDocument.createElement("style");
styleElement.innerHTML = styleContainer.textContent;
srcDocument.head.insertBefore(styleElement,srcDocument.head.firstChild);
$tw.wiki.addEventListener("change",function(changes) {
if(styleWidgetNode.refresh(changes,styleContainer,null)) {
styleElement.innerHTML = styleContainer.textContent;
}
});
// Render the text of the tiddler
var parser = $tw.wiki.parseTiddler(template),
widgetNode = $tw.wiki.makeWidget(parser,{document: srcDocument, variables: {currentTiddler: title}});
widgetNode.render(srcDocument.body,null);
$tw.wiki.addEventListener("change",function(changes) {
// Function to handle refreshes
refreshHandler = function(changes) {
if(styleWidgetNode.refresh(changes,styleContainer,null)) {
styleElement.innerHTML = styleContainer.textContent;
}
widgetNode.refresh(changes);
});
};
$tw.wiki.addEventListener("change",refreshHandler);
srcWindow.haveInitialisedWindow = true;
});
};