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Add config_widget docs to creating_plugins.rst

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Kovid Goyal 2011-03-27 13:34:23 -06:00
parent 87c7fc9558
commit a3e095b2c6
2 changed files with 32 additions and 4 deletions
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29
src/calibre/manual/creating_plugins.rst
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@ -105,6 +105,7 @@ in a GUI context.
Remember that for this to work, you must have a plugin-import-name-some_name.txt file in your plugin zip file,
as discussed above.
Also there are a couple of methods for enabling user configuration of the plugin. These are discussed below.
ui.py
^^^^^^^^
@ -138,6 +139,34 @@ Getting resources from the plugin zip file
A convenience wrapper for get_resources() that creates QIcon objects from the raw bytes returned by get_resources.
If a name is not found in the zip file the corresponding QIcon will be null.
Enabling user configuration of your plugin
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
To allow users to configure your plugin, you must define a couple of methods in your base plugin class, **config_widget** and **save_settings** as shown below:
.. literalinclude:: plugin_examples/interface_demo/__init__.py
:pyobject: InterfacePluginDemo.config_widget
.. literalinclude:: plugin_examples/interface_demo/__init__.py
:pyobject: InterfacePluginDemo.save_settings
|app| has many different ways to store configuration data (a legacy of its long history). The recommended way is to use the **JSONConfig** class, which stores your configuration information in a .json file.
The code to manage configuration data in the demo plugin is in config.py:
.. literalinclude:: plugin_examples/interface_demo/config.py
:lines: 10-
The ``prefs`` object is now available throughout the plugin code by a simple::
from calibre_plugins.interface_demo.config import prefs
You can see the ``prefs`` object being used in main.py:
.. literalinclude:: plugin_examples/interface_demo/main.py
:pyobject: DemoDialog.config
The different types of plugins
--------------------------------

7
src/calibre/manual/plugin_examples/interface_demo/config.py
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@ -12,11 +12,10 @@ from PyQt4.Qt import QWidget, QHBoxLayout, QLabel, QLineEdit
from calibre.utils.config import JSONConfig
# This is where all preferences for this plugin will be stored
# Remember that this name is also ina global namespace, so make it as uniqie
# Remember that this name is also in a global namespace, so make it as unique
# as possible.
# It is good etiquette, though not strictly required to always prefix your
# config file name with plugins/, so as to ensure you dont accidentally clobber
# a calibre config file
# You should always prefix your config file name with plugins/,
# so as to ensure you dont accidentally clobber a calibre config file
prefs = JSONConfig('plugins/interface_demo')
# Set defaults