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Guidelines on Code Modification
===============================

Coding Style
------------

* Use syntax compatible to both python 2.6 and 3.1.
* Use docstrings with pydoc in mind
* Follow the style guide for python code:
    http://www.python.org/dev/peps/pep-0008/
* Although this guide suggests otherwise, tabs are used for indentation
    of code and docstrings.  In other documents (readme, etc), use spaces.
* Test the code with "doctest" where it makes sense


Patches
-------

Send patches, created with "git format-patch", to the email adress

    romanz@lavabit.com

If you plan to do major changes, or many changes over time, I encourage
you to create a fork on GitHub, Gitorious or any other site.


Starting Points
---------------

Good places to read about ranger internals are:
ranger/core/actions.py
ranger/core/environment.py
ranger/fsobject/fsobject.py

About the UI:
ranger/gui/widgets/browsercolumn.py
ranger/gui/widgets/browserview.py
ranger/gui/ui.py


Common Changes
--------------

* Change which files are previewed in the auto preview:
In ranger/fsobject/file.py
the constant PREVIEW_BLACKLIST

* Adding options:
In ranger/config/options.py
add the default value, like: my_option = True
In ranger/container/settingobject.py
add the name of your option to the constant ALLOWED_SETTINGS

The setting is now accessible at self.settings.my_option,
assuming <self> is a "SettingsAware" object.

* Adding colorschemes:
Copy ranger/colorschemes/default.py to ranger/colorschemes/myscheme.py
and modify it according to your needs.  Alternatively, mimic the jungle
colorscheme.  It subclasses the default scheme and just modifies a few things.
In ranger/config/options.py (or ~/.config/ranger/options.py), change
    colorscheme = 'default'
to: colorscheme = 'myscheme'

* Change the file type => application associations:
In ranger/config/apps.py
modify the method app_default.
The variable "f" is a filesystem-object with attributes like mimetype,
extension, etc.  For a full list, check ranger/fsobject/fsobject.py

* Change the file extension => mime type associations:
Modify ranger/data/mime.types


Version Numbering
-----------------

Three numbers;  The first changes on a rewrite, the second changes when major
configuration incompatibilities occur and the third changes with each release.
ss='alt'>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Python: module ranger.gui.ui</title>
</head><body bgcolor="#f0f0f8">

<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
<tr bgcolor="#7799ee">
<td valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong><a href="ranger.html"><font color="#ffffff">ranger</font></a>.<a href="ranger.gui.html"><font color="#ffffff">gui</font></a>.ui</strong></big></big></font></td
><td align=right valign=bottom
><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/home/hut/ranger/ranger/gui/ui.py">/home/hut/ranger/ranger/gui/ui.py</a></font></td></tr></table>
    <p><tt>#&nbsp;Copyright&nbsp;(C)&nbsp;2009,&nbsp;2010&nbsp;&nbsp;Roman&nbsp;Zimbelmann&nbsp;&lt;romanz@lavabit.com&gt;<br>
#<br>
#&nbsp;This&nbsp;program&nbsp;is&nbsp;free&nbsp;software:&nbsp;you&nbsp;can&nbsp;redistribute&nbsp;it&nbsp;and/or&nbsp;modify<br>
#&nbsp;it&nbsp;under&nbsp;the&nbsp;terms&nbsp;of&nbsp;the&nbsp;GNU&nbsp;General&nbsp;Public&nbsp;License&nbsp;as&nbsp;published&nbsp;by<br>
#&nbsp;the&nbsp;Free&nbsp;Software&nbsp;Foundation,&nbsp;either&nbsp;version&nbsp;3&nbsp;of&nbsp;the&nbsp;License,&nbsp;or<br>
#&nbsp;(at&nbsp;your&nbsp;option)&nbsp;any&nbsp;later&nbsp;version.<br>
#<br>
#&nbsp;This&nbsp;program&nbsp;is&nbsp;distributed&nbsp;in&nbsp;the&nbsp;hope&nbsp;that&nbsp;it&nbsp;will&nbsp;be&nbsp;useful,<br>
#&nbsp;but&nbsp;WITHOUT&nbsp;ANY&nbsp;WARRANTY;&nbsp;without&nbsp;even&nbsp;the&nbsp;implied&nbsp;warranty&nbsp;of<br>
#&nbsp;MERCHANTABILITY&nbsp;or&nbsp;FITNESS&nbsp;FOR&nbsp;A&nbsp;PARTICULAR&nbsp;PURPOSE.&nbsp;&nbsp;See&nbsp;the<br>
#&nbsp;GNU&nbsp;General&nbsp;Public&nbsp;License&nbsp;for&nbsp;more&nbsp;details.<br>
#<br>
#&nbsp;You&nbsp;should&nbsp;have&nbsp;received&nbsp;a&nbsp;copy&nbsp;of&nbsp;the&nbsp;GNU&nbsp;General&nbsp;Public&nbsp;License<br>
#&nbsp;along&nbsp;with&nbsp;this&nbsp;program.&nbsp;&nbsp;If&nbsp;not,&nbsp;see&nbsp;&lt;<a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>&gt;.</tt></p>
<p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#aa55cc">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Modules</strong></big></font></td></tr>
    
<tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="_curses.html">_curses</a><br>
<a href="curses.html">curses</a><br>
</td><td width="25%" valign=top><a href="os.html">os</a><br>
<a href="socket.html">socket</a><br>
</td><td width="25%" valign=top><a href="sys.html">sys</a><br>
</td><td width="25%" valign=top></td></tr></table></td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ee77aa">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr>
    
<tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl>
<dt><font face="helvetica, arial"><a href="ranger.gui.displayable.html#DisplayableContainer">ranger.gui.displayable.DisplayableContainer</a>(<a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>)
</font></dt><dd>
<dl>
<dt><font face="helvetica, arial"><a href="ranger.gui.ui.html#UI">UI</a>
</font></dt></dl>
</dd>
</dl>
 <p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#000000" face="helvetica, arial"><a name="UI">class <strong>UI</strong></a>(<a href="ranger.gui.displayable.html#DisplayableContainer">ranger.gui.displayable.DisplayableContainer</a>)</font></td></tr>
    
<tr><td bgcolor="#ffc8d8"><tt>&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl><dt>Method resolution order:</dt>
<dd><a href="ranger.gui.ui.html#UI">UI</a></dd>
<dd><a href="ranger.gui.displayable.html#DisplayableContainer">ranger.gui.displayable.DisplayableContainer</a></dd>
<dd><a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a></dd>
<dd><a href="ranger.shared.html#EnvironmentAware">ranger.shared.EnvironmentAware</a></dd>
<dd><a href="ranger.shared.html#FileManagerAware">ranger.shared.FileManagerAware</a></dd>
<dd><a href="ranger.shared.html#Awareness">ranger.shared.Awareness</a></dd>
<dd><a href="ranger.gui.curses_shortcuts.html#CursesShortcuts">ranger.gui.curses_shortcuts.CursesShortcuts</a></dd>
<dd><a href="ranger.shared.settings.html#SettingsAware">ranger.shared.settings.SettingsAware</a></dd>
<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
</dl>
<hr>
Methods defined here:<br>
<dl><dt><a name="UI-__init__"><strong>__init__</strong></a>(self, commandlist<font color="#909090">=None</font>, env<font color="#909090">=None</font>, fm<font color="#909090">=None</font>)</dt></dl>

<dl><dt><a name="UI-destroy"><strong>destroy</strong></a>(self)</dt><dd><tt>Destroy&nbsp;all&nbsp;widgets&nbsp;and&nbsp;turn&nbsp;off&nbsp;curses</tt></dd></dl>

<dl><dt><a name="UI-draw"><strong>draw</strong></a>(self)</dt><dd><tt>Draw&nbsp;all&nbsp;objects&nbsp;in&nbsp;the&nbsp;container</tt></dd></dl>

<dl><dt><a name="UI-finalize"><strong>finalize</strong></a>(self)</dt><dd><tt>Finalize&nbsp;every&nbsp;object&nbsp;in&nbsp;container&nbsp;and&nbsp;refresh&nbsp;the&nbsp;window</tt></dd></dl>

<dl><dt><a name="UI-get_next_key"><strong>get_next_key</strong></a>(self)</dt><dd><tt>Waits&nbsp;for&nbsp;key&nbsp;input&nbsp;and&nbsp;returns&nbsp;the&nbsp;pressed&nbsp;key</tt></dd></dl>

<dl><dt><a name="UI-handle_key"><strong>handle_key</strong></a>(self, key)</dt><dd><tt>Handles&nbsp;key&nbsp;input</tt></dd></dl>

<dl><dt><a name="UI-handle_mouse"><strong>handle_mouse</strong></a>(self)</dt><dd><tt>Handles&nbsp;mouse&nbsp;input</tt></dd></dl>

<dl><dt><a name="UI-initialize"><strong>initialize</strong></a>(self)</dt><dd><tt>initialize&nbsp;curses,&nbsp;then&nbsp;call&nbsp;setup&nbsp;(at&nbsp;the&nbsp;first&nbsp;time)&nbsp;and&nbsp;resize.</tt></dd></dl>

<dl><dt><a name="UI-redraw"><strong>redraw</strong></a>(self)</dt><dd><tt>Redraw&nbsp;all&nbsp;widgets</tt></dd></dl>

<dl><dt><a name="UI-redraw_window"><strong>redraw_window</strong></a>(self)</dt><dd><tt>Redraw&nbsp;the&nbsp;window.&nbsp;This&nbsp;only&nbsp;calls&nbsp;self.<strong>win</strong>.redrawwin().</tt></dd></dl>

<dl><dt><a name="UI-set_load_mode"><strong>set_load_mode</strong></a>(self, boolean)</dt></dl>

<dl><dt><a name="UI-setup"><strong>setup</strong></a>(self)</dt><dd><tt>Called&nbsp;after&nbsp;an&nbsp;<a href="#UI-initialize">initialize</a>()&nbsp;call.<br>
Override&nbsp;this!</tt></dd></dl>

<dl><dt><a name="UI-suspend"><strong>suspend</strong></a>(self)</dt><dd><tt>Turn&nbsp;off&nbsp;curses</tt></dd></dl>

<dl><dt><a name="UI-update_size"><strong>update_size</strong></a>(self)</dt><dd><tt>Update&nbsp;self.<strong>env</strong>.termsize.<br>
Extend&nbsp;this&nbsp;method&nbsp;to&nbsp;resize&nbsp;all&nbsp;widgets!</tt></dd></dl>

<hr>
Data and other attributes defined here:<br>
<dl><dt><strong>is_set_up</strong> = False</dl>

<dl><dt><strong>load_mode</strong> = False</dl>

<dl><dt><strong>mousemask</strong> = 268435455</dl>

<hr>
Methods inherited from <a href="ranger.gui.displayable.html#DisplayableContainer">ranger.gui.displayable.DisplayableContainer</a>:<br>
<dl><dt><a name="UI-add_child"><strong>add_child</strong></a>(self, obj)</dt><dd><tt>Add&nbsp;the&nbsp;objects&nbsp;to&nbsp;the&nbsp;container.</tt></dd></dl>

<dl><dt><a name="UI-click"><strong>click</strong></a>(self, event)</dt><dd><tt>Recursively&nbsp;called&nbsp;on&nbsp;objects&nbsp;in&nbsp;container</tt></dd></dl>

<dl><dt><a name="UI-poke"><strong>poke</strong></a>(self)</dt><dd><tt>Recursively&nbsp;called&nbsp;on&nbsp;objects&nbsp;in&nbsp;container</tt></dd></dl>

<dl><dt><a name="UI-press"><strong>press</strong></a>(self, key)</dt><dd><tt>Recursively&nbsp;called&nbsp;on&nbsp;objects&nbsp;in&nbsp;container</tt></dd></dl>

<dl><dt><a name="UI-remove_child"><strong>remove_child</strong></a>(self, obj)</dt><dd><tt>Remove&nbsp;the&nbsp;object&nbsp;from&nbsp;the&nbsp;container.</tt></dd></dl>

<hr>
Methods inherited from <a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>:<br>
<dl><dt><a name="UI-__bool__"><strong>__bool__</strong></a> = __nonzero__(self)</dt><dd><tt>Always&nbsp;True</tt></dd></dl>

<dl><dt><a name="UI-__contains__"><strong>__contains__</strong></a>(self, item)</dt><dd><tt>Is&nbsp;item&nbsp;inside&nbsp;the&nbsp;boundaries?<br>
item&nbsp;can&nbsp;be&nbsp;an&nbsp;iterable&nbsp;like&nbsp;[y,&nbsp;x]&nbsp;or&nbsp;an&nbsp;object&nbsp;with&nbsp;x&nbsp;and&nbsp;y&nbsp;methods.</tt></dd></dl>

<dl><dt><a name="UI-__nonzero__"><strong>__nonzero__</strong></a>(self)</dt><dd><tt>Always&nbsp;True</tt></dd></dl>

<dl><dt><a name="UI-__str__"><strong>__str__</strong></a>(self)</dt></dl>

<dl><dt><a name="UI-contains_point"><strong>contains_point</strong></a>(self, y, x)</dt><dd><tt>Test&nbsp;whether&nbsp;the&nbsp;point&nbsp;(with&nbsp;absolute&nbsp;coordinates)&nbsp;lies<br>
within&nbsp;the&nbsp;boundaries&nbsp;of&nbsp;this&nbsp;object.</tt></dd></dl>

<dl><dt><a name="UI-resize"><strong>resize</strong></a>(self, y, x, hei<font color="#909090">=None</font>, wid<font color="#909090">=None</font>)</dt><dd><tt>Resize&nbsp;the&nbsp;widget</tt></dd></dl>

<hr>
Data and other attributes inherited from <a href="ranger.shared.html#EnvironmentAware">ranger.shared.EnvironmentAware</a>:<br>
<dl><dt><strong>env</strong> = None</dl>

<hr>
Data and other attributes inherited from <a href="ranger.shared.html#FileManagerAware">ranger.shared.FileManagerAware</a>:<br>
<dl><dt><strong>fm</strong> = None</dl>

<hr>
Data descriptors inherited from <a href="ranger.shared.html#Awareness">ranger.shared.Awareness</a>:<br>
<dl><dt><strong>__dict__</strong></dt>
<dd><tt>dictionary&nbsp;for&nbsp;instance&nbsp;variables&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<dl><dt><strong>__weakref__</strong></dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<hr>
Methods inherited from <a href="ranger.gui.curses_shortcuts.html#CursesShortcuts">ranger.gui.curses_shortcuts.CursesShortcuts</a>:<br>
<dl><dt><a name="UI-addnstr"><strong>addnstr</strong></a>(self, *args)</dt></dl>

<dl><dt><a name="UI-addstr"><strong>addstr</strong></a>(self, *args)</dt></dl>

<dl><dt><a name="UI-color"><strong>color</strong></a>(self, *keys)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;from&nbsp;now&nbsp;on.</tt></dd></dl>

<dl><dt><a name="UI-color_at"><strong>color_at</strong></a>(self, y, x, wid, *keys)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;at&nbsp;the&nbsp;specified&nbsp;position</tt></dd></dl>

<dl><dt><a name="UI-color_reset"><strong>color_reset</strong></a>(self)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;to&nbsp;the&nbsp;default&nbsp;colors</tt></dd></dl>

<hr>
Data and other attributes inherited from <a href="ranger.shared.settings.html#SettingsAware">ranger.shared.settings.SettingsAware</a>:<br>
<dl><dt><strong>settings</strong> = {}</dl>

</td></tr></table></td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#55aa55">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
    
<tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><strong>TERMINALS_WITH_TITLE</strong> = ('xterm', 'xterm-256color', 'rxvt', 'rxvt-256color', 'rxvt-unicode', 'aterm', 'Eterm', 'screen', 'screen-256color')</td></tr></table>
</body></html>