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<?php
/**
* Main info hook that features uses to determine what components are provided
* by the implementing module.
*
* @return array
* An array of components, keyed by the component name. Each component can
* define several keys:
*
* 'file': Optional path to a file to include which contains the rest
* of the features API hooks for this module.
*
* 'default_hook': The defaults hook for your component that is called
* when the cache of default components is generated. Examples include
* hook_views_default_views() or hook_context_default_contexts().
*
* 'default_file': The file-writing behavior to use when exporting this
* component. May be one of 3 constant values:
*
* FEATURES_DEFAULTS_INCLUDED_COMMON: write hooks/components to
* `.features.inc` with other components. This is the default behavior
* if this key is not defined.
*
* FEATURES_DEFAULTS_INCLUDED: write hooks/components to a component-
* specific include named automatically by features.
*
* FEATURES_DEFAULTS_CUSTOM: write hooks/components to a component-
* specific include with a custom name provided. If your module provides
* large amounts of code that should not be parsed often (only on specific
* cache clears/rebuilds, for example) you should use the 2nd or 3rd
* options to split your component into its own include.
*
* 'default_filename': The filename to use when 'default_file' is set to
* FEATURES_DEFAULTS_CUSTOM.
*
* 'features_source': Boolean value for whether this component should be
* offered as an option on the initial feature creation form.
*
* 'base': Optional. An alternative base key to use when calling features
* hooks for this component. Can be used for features component types that
* are declared "dynamically" or are part of a family of components.
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*/
function hook_features_api() {
return array(
'mycomponent' => array(
'default_hook' => 'mycomponent_defaults',
'default_file' => FEATURES_DEFAULTS_INCLUDED,
'features_source' => TRUE,
'file' => drupal_get_path('module', 'mycomponent') .'/mycomponent.features.inc',
),
);
}
/**
* Component hook. The hook should be implemented using the name ot the
* component, not the module, eg. [component]_features_export() rather than
* [module]_features_export().
*
* Process the export array for a given component. Implementations of this hook
* have three key tasks:
*
* 1. Determine module dependencies for any of the components passed to it
* e.g. the views implementation iterates over each views' handlers and
* plugins to determine which modules need to be added as dependencies.
*
* 2. Correctly add components to the export array. In general this is usually
* adding all of the items in $data to $export['features']['my_key'], but
* can become more complicated if components are shared between features
* or modules.
*
* 3. Delegating further detection and export tasks to related or derivative
* components.
*
* Each export processor can kickoff further export processors by returning a
* keyed array (aka the "pipe") where the key is the next export processor hook
* to call and the value is an array to be passed to that processor's $data
* argument. This allows an export process to start simply at a few objects:
*
* [context]
*
* And then branch out, delegating each component to its appropriate hook:
*
* [context]--------+------------+
* | | |
* [node] [block] [views]
* |
* [CCK]
* |
* [imagecache]
*
* @param array $data
* An array of machine names for the component in question to be exported.
* @param array &$export
* By reference. An array of all components to be exported with a given
* feature. Component objects that should be exported should be added to
* this array.
* @param string $module_name
* The name of the feature module to be generated.
* @return array
* The pipe array of further processors that should be called.
*/
function hook_features_export($data, &$export, $module_name) {
// The following is the simplest implementation of a straight object export
// with no further export processors called.
foreach ($data as $component) {
$export['mycomponent'][$component] = $component;
}
return array();
}
/**
* Component hook. The hook should be implemented using the name ot the
* component, not the module, eg. [component]_features_export() rather than
* [module]_features_export().
*
* List all objects for a component that may be exported.
*
* @return array
* A keyed array of items, suitable for use with a FormAPI select or
* checkboxes element.
*/
function hook_features_export_options() {
$options = array();
foreach (mycomponent_load() as $mycomponent) {
$options[$mycomponent->name] = $mycomponent->title;
}
return $options;
}
/**
* Component hook. The hook should be implemented using the name ot the
* component, not the module, eg. [component]_features_export() rather than
* [module]_features_export().
*
* Render one or more component objects to code.
*
* @param string $module_name
* The name of the feature module to be exported.
* @param array $data
* An array of machine name identifiers for the objects to be rendered.
* @param array $export
* The full export array of the current feature being exported. This is only
* passed when hook_features_export_render() is invoked for an actual feature
* update or recreate, not during state checks or other operations.
* @return array
* An associative array of rendered PHP code where the key is the name of the
* hook that should wrap the PHP code. The hook should not include the name
Mike Potter
committed
* of the module, e.g. the key for `hook_example` should simply be `example`
* The values in the array can also be in the form of an associative array
* with the required key of 'code' and optional key of 'args', if 'args' need
* to be added to the hook.
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*/
function hook_features_export_render($module_name, $data, $export = NULL) {
$code = array();
$code[] = '$mycomponents = array();';
foreach ($data as $name) {
$code[] = " \$mycomponents['{$name}'] = " . features_var_export(mycomponent_load($name)) .";";
}
$code[] = "return \$mycomponents;";
$code = implode("\n", $mycomponents);
return array('mycomponent_defaults' => $code);
}
/**
* Component hook. The hook should be implemented using the name ot the
* component, not the module, eg. [component]_features_export() rather than
* [module]_features_export().
*
* Revert all component objects for a given feature module.
*
* @param string $module_name
* The name of the feature module whose components should be reverted.
* @return boolean
* TRUE or FALSE for whether the components were successfully reverted.
*/
function hook_features_export_revert($module_name) {
$mycomponents = module_invoke_all($module_name, 'mycomponent_defaults');
if (!empty($$mycomponents)) {
foreach ($mycomponents as $mycomponent) {
mycomponent_delete($mycomponent);
}
}
}
/**
* Component hook. The hook should be implemented using the name ot the
* component, not the module, eg. [component]_features_export() rather than
* [module]_features_export().
*
* Rebuild all component objects for a given feature module. Should only be
* implemented for 'faux-exportable' components.
*
* This hook is called at points where Features determines that it is safe
* (ie. the feature is in state `FEATURES_REBUILDABLE`) for your module to
* replace objects in the database with defaults that you collect from your
* own defaults hook. See API.txt for how Features determines whether a
* rebuild of components is possible.
*
* @param string $module_name
* The name of the feature module whose components should be rebuilt.
*/
function hook_features_export_rebuild($module_name) {
$mycomponents = module_invoke_all($module_name, 'mycomponent_defaults');
if (!empty($$mycomponents)) {
foreach ($mycomponents as $mycomponent) {
mycomponent_save($mycomponent);
}
}
}
/**
* Alter the final export array just prior to the rendering of defaults. Allows
* modules a final say in altering what component objects are exported.
*
* @param array &$export
* By reference. An array of all components to be exported with a given
* feature.
* @param array $module_name
* The name of the feature module to be generated.
*/
function hook_features_export_alter(&$export, $module_name) {
// Example: do not allow the page content type to be exported, ever.
Frank Febbraro
committed
if (!empty($export['features']['node']['page'])) {
unset($export['features']['node']['page']);
}
}
/**
* Alter the pipe array for a given component. This hook should be implemented
* with the name of the component type in place of `component` in the function
* name, e.g. `features_pipe_views_alter()` will alter the pipe for the Views
* component.
*
* @param array &$pipe
* By reference. The pipe array of further processors that should be called.
* @param array $data
* An array of machine names for the component in question to be exported.
* @param array &$export
* By reference. An array of all components to be exported with a given
* feature.
*/
function hook_features_pipe_COMPONENT_alter(&$pipe, $data, $export) {
if (in_array($data, 'my-node-type')) {
$pipe['dependencies'][] = 'mymodule';
}
}
/**
* Alter the pipe array for a given component.
*
* @param array &$pipe
* By reference. The pipe array of further processors that should be called.
* @param array $data
* An array of machine names for the component in question to be exported.
* @param array &$export
* By reference. An array of all components to be exported with a given
* feature.
*
* The component being exported is contained in $export['component'].
*/
function hook_features_pipe_alter(&$pipe, $data, $export) {
if ($export['component'] == 'node' && in_array($data, 'my-node-type')) {
$pipe['dependencies'][] = 'mymodule';
}
}
/**
* @defgroup features_component_alter_hooks Feature's component alter hooks
* @{
* Hooks to modify components defined by other features. These come in the form
* hook_COMPONENT_alter where COMPONENT is the default_hook declared by any of
* components within features.
*
* CTools also has a variety of hook_FOO_alters.
*
* Note: While views is a component of features, it declares it's own alter
* function which takes a similar form:
* hook_views_default_views_alter(&$views)
*/
/**
* Alter the default fields right before they are cached into the database.
*
* @param &$fields
* By reference. The fields that have been declared by another feature.
*/
function hook_field_default_fields_alter(&$fields) {
* Alter the default fieldgroup groups right before they are cached into the
* By reference. The fieldgroup groups that have been declared by another
* feature.
*/
function hook_fieldgroup_default_groups_alter(&$groups) {
}
/**
* Alter the default filter formats right before they are cached into the
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* database.
*
* @param &$formats
* By reference. The formats that have been declared by another feature.
*/
function hook_filter_default_formats_alter(&$formats) {
}
/**
* Alter the default menus right before they are cached into the database.
*
* @param &$menus
* By reference. The menus that have been declared by another feature.
*/
function hook_menu_default_menu_custom_alter(&$menus) {
}
/**
* Alter the default menu links right before they are cached into the database.
*
* @param &$links
* By reference. The menu links that have been declared by another feature.
*/
function hook_menu_default_menu_links_alter(&$links) {
}
/**
* Alter the default menu items right before they are cached into the database.
*
* @param &$items
* By reference. The menu items that have been declared by another feature.
*/
function hook_menu_default_items_alter(&$items) {
}
/**
* Alter the default vocabularies right before they are cached into the
* database.
*
* @param &$vocabularies
* By reference. The vocabularies that have been declared by another feature.
*/
function hook_taxonomy_default_vocabularies_alter(&$vocabularies) {
}
/**
* Alter the default permissions right before they are cached into the
* database.
*
* @param &$permissions
* By reference. The permissions that have been declared by another feature.
*/
function hook_user_default_permissions_alter(&$permissions) {
}
/**
* Alter the default roles right before they are cached into the database.
*
* @param &$roles
* By reference. The roles that have been declared by another feature.
*/
function hook_user_default_roles_alter(&$roles) {
}
/**
* @}
*/