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Bug 1250398 - Disable APZ for source editors. r=gl

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MozReview-Commit-ID: JmUuoobDr7y
This commit is contained in:
J. Ryan Stinnett 2016-02-19 20:08:10 -06:00
parent 8b000f55a3
commit a78f3444fe
1 changed files with 24 additions and 0 deletions
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24
devtools/client/sourceeditor/editor.js
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@ -302,6 +302,30 @@ Editor.prototype = {
// context menus won't work). // context menus won't work).
cm = win.CodeMirror(win.document.body, this.config); cm = win.CodeMirror(win.document.body, this.config);
// Disable APZ for source editors. It currently causes the line numbers to
// "tear off" and swim around on top of the content. Bug 1160601 tracks
// finding a solution that allows APZ to work with CodeMirror.
cm.getScrollerElement().addEventListener("wheel", ev => {
// By handling the wheel events ourselves, we force the platform to
// scroll synchronously, like it did before APZ. However, we lose smooth
// scrolling for users with mouse wheels. This seems acceptible vs.
// doing nothing and letting the gutter slide around.
ev.preventDefault();
let { deltaX, deltaY } = ev;
if (ev.deltaMode == ev.DOM_DELTA_LINE) {
deltaX *= cm.defaultCharWidth();
deltaY *= cm.defaultTextHeight();
} else if (ev.deltaMode == ev.DOM_DELTA_PAGE) {
deltaX *= cm.getWrapperElement().clientWidth;
deltaY *= cm.getWrapperElement().clientHeight;
}
cm.getScrollerElement().scrollBy(deltaX, deltaY);
});
cm.getWrapperElement().addEventListener("contextmenu", ev => { cm.getWrapperElement().addEventListener("contextmenu", ev => {
ev.preventDefault(); ev.preventDefault();