ruamel.bws 0.2.6

browser restore to workspace

The Problem

On Linux, after a crash, or a re-login, Firefox and Chrome can restore their previous windows’ contents and positions. However they do not normally restore these windows in the different workspaces/desktops that you may be using.

If the desktop manager implements workspaces by using offsets (wider or higher than the desktop resolution) restoration works as offsets “push” the window to the right workspace on restoration. Such a workspace setup often implies you see a window that you moveover the edge of one workspace show up on the next one. KDE seems to have used such a scheme in the period 2010-2013.

Browsers would need to be EWMH aware, which they currently aren’t.

A partial solution

But browser windows usually have the name of the page visited in the title, which makes instances of the browser windows relatively uniquely identifiable. Based on that you can save the state of the browser windows in a file, and restore windows with matching titles to the original workspace.

This program will not work correctly if a browser window has the same title on multiple workspaces and only has differing secondary tabs. If two, single tab windows have the same title, they probably point to the same URL, and in that case which one gets restored to what workspace is less important (unless the history makes a difference).

Installation

First, make sure your linux version has wmctrl installed.

You can use pip to install the program:

pip install bws

You can also install the configobj library (with pip) and directly download and use the main Python file.

Usage

Run bws save to save the current browser windows, bws restore to restore the latest saved setup. Before restoring reopen the browser windows and select [Restore] as necessary.

Chrome needs to be configured to allow restoring by selecting “Continue where you left off”, in the settings menu. Firefox always seems to ask when a crash occured, but you can also explicitly set the preferences to “Show my windows and tabs from last time”

The program keeps configuration defaults and restore information in (by default) ~/.config/bws in bws.ini resp. *.bws files. Multiple restore settings are kept (which might be a privacy issue for you), and bws list will show you which ones (with a date-time-stamp). bws restore can take an argument to select a specific “save””

The config file allows to expand the patterns that are matched on where /proc/PID/exe points to, to identify the windows for which information needs saving. A minimum number of windows can be specified that are necessary for restoring (in the configuration file or on the commandline; the commandline overrules the configuration file). This minimum prevents saves of browser windows when a single window is open asking for confirmation to restore previously opened windows.

Cron

I run bws from crontab file every five minutes like this:

*/5 *  *   *   *     DISPLAY=:0 /home/anthon/.venv/27/bin/bws save --check

the --check only works if the file specified with --unlock-file exists. This defaults to /tmp/bws.restored (which is on a temporary filesystem).

Issuing bws restore removes this unlock file, unless you specify –unlock, which I do on the last run.

ToDo

• check windows position for multiple occuring same strings (assuming positions differ, this gives additional info for workspace determination)

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Firefox

https://bugzilla.mozilla.org/show_bug.cgi?id=372650 https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/684982

Chrome

https://code.google.com/p/chromium/issues/detail?id=18596 https://groups.google.com/a/chromium.org/forum/#!topic/chromium-discuss/h8tY-p-gXIE

KDE used to work

https://code.google.com/p/chromium/issues/detail?id=297864