зеркало из https://github.com/mozilla/gecko-dev.git
Backed out changeset 9c966265dc48 (bug 1383367)
MozReview-Commit-ID: HW5syKq18xj
This commit is contained in:
Родитель
3625be87df
Коммит
64305ef2cd
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@ -16,48 +16,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
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Cu.importGlobalProperties(["URL"]);
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let reflowObservers = new WeakMap();
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function ReflowObserver(doc) {
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this._doc = doc;
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doc.docShell.addWeakReflowObserver(this);
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reflowObservers.set(this._doc, this);
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this.callbacks = [];
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}
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ReflowObserver.prototype = {
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QueryInterface: XPCOMUtils.generateQI(["nsIReflowObserver", "nsISupportsWeakReference"]),
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_onReflow() {
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reflowObservers.delete(this._doc);
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this._doc.docShell.removeWeakReflowObserver(this);
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for (let callback of this.callbacks) {
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try {
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callback();
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} catch (e) {
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Cu.reportError(e);
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}
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}
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},
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reflow() {
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this._onReflow();
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},
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reflowInterruptible() {
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this._onReflow();
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},
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};
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const FLUSH_TYPES = {
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"style": Ci.nsIDOMWindowUtils.FLUSH_STYLE,
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"layout": Ci.nsIDOMWindowUtils.FLUSH_LAYOUT,
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"display": Ci.nsIDOMWindowUtils.FLUSH_DISPLAY,
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};
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this.BrowserUtils = {
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/**
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@ -668,63 +626,4 @@ this.BrowserUtils = {
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}
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return [url, postData];
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},
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/**
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* Calls the given function when the given document has just reflowed,
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* and returns a promise which resolves to its return value after it
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* has been called.
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*
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* The function *must not trigger any reflows*, or make any changes
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* which would require a layout flush.
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*
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* @param {Document} doc
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* @param {function} callback
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* @returns {Promise}
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*/
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promiseReflowed(doc, callback) {
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let observer = reflowObservers.get(doc);
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if (!observer) {
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observer = new ReflowObserver(doc);
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reflowObservers.set(doc, observer);
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}
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return new Promise((resolve, reject) => {
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observer.callbacks.push(() => {
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try {
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resolve(callback());
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} catch (e) {
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reject(e);
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}
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});
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});
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},
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/**
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* Calls the given function as soon as a layout flush of the given
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* type is not necessary, and returns a promise which resolves to the
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* callback's return value after it executes.
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*
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* The function *must not trigger any reflows*, or make any changes
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* which would require a layout flush.
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*
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* @param {Document} doc
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* @param {string} flushType
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* The flush type required. Must be one of:
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*
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* - "style"
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* - "layout"
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* - "display"
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* @param {function} callback
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* @returns {Promise}
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*/
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async promiseLayoutFlushed(doc, flushType, callback) {
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let utils = doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils);
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if (!utils.needsFlush(FLUSH_TYPES[flushType])) {
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return callback();
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}
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return this.promiseReflowed(doc, callback);
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},
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};
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