/**
* Sets options for a display, inheriting from the defaults when possible.
*
* This function can be used to set options for a display when it is desired
* that the options inherit from the default display whenever possible. This
* avoids setting too many options as overrides, which will be harder for the
* user to modify later. For example, if $this->setDefaultOptions() was
* previously called on a page display and then this function is called on a
* block display, and if the user entered the same title for both displays in
* the views wizard, then the view will wind up with the title stored as the
* default (with the page and block both inheriting from it).
*
* @param array $options
* An array whose keys are the name of each option and whose values are the
* desired values to set.
* @param \Drupal\views\View\plugin\display\DisplayPluginBase $display
* The display handler which the options will be applied to. The default
* display will actually be assigned the options (and this display will
* inherit them) when possible.
* @param \Drupal\views\View\plugin\display\DisplayPluginBase $default_display
* The default display handler, which will store the options when possible.
*/
protected function setOverrideOptions(array $options, DisplayPluginBase $display, DisplayPluginBase $default_display)
{
foreach ($options as $option => $value) {
// Only override the default value if it is different from the value that
// was provided.
$default_value = $default_display->getOption($option);
if (!isset($default_value)) {
$display->setOption($option, $value);
} elseif ($default_value !== $value) {
$display->overrideOption($option, $value);
}
}
}
