author Jan Henning <>
Fri, 11 Jan 2019 21:21:41 +0000
changeset 453568 0355f47af6ceab050018e9c27fc9d9c4bb944662
parent 390350 f541c03beb5f21a380ec2146f37c609b708b5661
permissions -rw-r--r--
Bug 1517976 - Test that resetting WindowUtils.isFirstPaint doesn't clobber APZ scroll position. r=botond We need to setup a case where the visual viewport is smaller than the layout viewport. Faking a pinch zoom through touch events is imprecise, whereas calling windowUtils.setResolutionAndScaleTo(value > 1) to simulate the equivalent effect of a pinch-zoom on the page led to the subsequent scroll attempt failing quite often even after calling waitForApzFlushedRepaints(). So instead, we set up a very wide layout viewport through the meta viewport tag, which on Desktop means additionally enabling the dom.meta-viewport.enabled pref. Differential Revision:

# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at

def DevToolsModules(*modules):
    '''Installs JS modules at a resource:// path that corresponds directly to
    their source tree location.

    For this to work as intended, a file should be placed in each
    source directory which uses this template to install only the JS files in
    its own directory.  Subdirectories should use their own

    By following this pattern, there's less magic to require() and resource://
    paths, since they now match the source tree.'''

    for m in modules:
        if '/' in m:
            error('DevToolsModules must be used from the same directory as ' +
                  'the files to be installed.')

    # manifest files are typically used to install files to chrome
    # locations.  Instead of doing this, use this DevToolsModules syntax via
    # files to do the installation so that we can enforce correct
    # paths based on source tree location.
    base =
    for dir in RELATIVEDIR.split('/'):
        base = base[dir]
    base += [m for m in modules]