AbstractRendererEngine

__construct(array $defaultThemes = array())

Creates a new renderer engine.

Parameters

array

$defaultThemes

The default themes. The type of these themes is open to the implementation.

setTheme(FormView $view, mixed $themes)

Sets the theme(s) to be used for rendering a view and its children.

Parameters

FormView	$view	The view to assign the theme(s) to
mixed	$themes	The theme(s). The type of these themes is open to the implementation.

mixed getResourceForBlockName(FormView $view, string $blockName)

Returns the resource for a block name.

The resource is first searched in the themes attached to $view, then in the themes of its parent view and so on, until a resource was found.

The type of the resource is decided by the implementation. The resource is later passed to {@link renderBlock()} by the rendering algorithm.

Parameters

FormView	$view	The view for determining the used themes. First the themes attached directly to the view with {@link setTheme()} are considered, then the ones of its parent etc.
string	$blockName	The name of the block to render

Return Value

mixed

the renderer resource or false, if none was found

mixed getResourceForBlockNameHierarchy(FormView $view, array $blockNameHierarchy, int $hierarchyLevel)

Returns the resource for a block hierarchy.

A block hierarchy is an array which starts with the root of the hierarchy and continues with the child of that root, the child of that child etc. The following is an example for a block hierarchy:

formwidget textwidget url_widget

In this example, "url_widget" is the most specific block, while the other blocks are its ancestors in the hierarchy.

The second parameter $hierarchyLevel determines the level of the hierarchy that should be rendered. For example, if $hierarchyLevel is 2 for the above hierarchy, the engine will first look for the block "urlwidget", then, if that does not exist, for the block "textwidget" etc.

The type of the resource is decided by the implementation. The resource is later passed to {@link renderBlock()} by the rendering algorithm.

Parameters

FormView	$view	The view for determining the used themes. First the themes attached directly to the view with {@link setTheme()} are considered, then the ones of its parent etc.
array	$blockNameHierarchy	The block name hierarchy, with the root block at the beginning
int	$hierarchyLevel	The level in the hierarchy at which to start looking. Level 0 indicates the root block, i.e. the first element of $blockNameHierarchy.

Return Value

mixed

The renderer resource or false, if none was found

int|bool getResourceHierarchyLevel(FormView $view, array $blockNameHierarchy, int $hierarchyLevel)

Returns the hierarchy level at which a resource can be found.

A block hierarchy is an array which starts with the root of the hierarchy and continues with the child of that root, the child of that child etc. The following is an example for a block hierarchy:

formwidget textwidget url_widget

The second parameter $hierarchyLevel determines the level of the hierarchy that should be rendered.

If we call this method with the hierarchy level 2, the engine will first look for a resource for block "urlwidget". If such a resource exists, the method returns 2. Otherwise it tries to find a resource for block "textwidget" (at level 1) and, again, returns 1 if a resource was found. The method continues to look for resources until the root level was reached and nothing was found. In this case false is returned.

The type of the resource is decided by the implementation. The resource is later passed to {@link renderBlock()} by the rendering algorithm.

Parameters

FormView	$view	The view for determining the used themes. First the themes attached directly to the view with {@link setTheme()} are considered, then the ones of its parent etc.
array	$blockNameHierarchy	The block name hierarchy, with the root block at the beginning
int	$hierarchyLevel	The level in the hierarchy at which to start looking. Level 0 indicates the root block, i.e. the first element of $blockNameHierarchy.

Return Value

int|bool

The hierarchy level or false, if no resource was found