Override sidebars_widgets for theme switch.

Description Description

When switching a theme via the Customizer, supply any previously-configured sidebars_widgets from the target theme as the initial sidebars_widgets setting. Also store the old theme’s existing settings so that they can be passed along for storing in the sidebars_widgets theme_mod when the theme gets switched.

Source Source

File: wp-includes/class-wp-customize-widgets.php

	public function override_sidebars_widgets_for_theme_switch() {
		global $sidebars_widgets;

		if ( $this->manager->doing_ajax() || $this->manager->is_theme_active() ) {

		$this->old_sidebars_widgets = wp_get_sidebars_widgets();
		add_filter( 'customize_value_old_sidebars_widgets_data', array( $this, 'filter_customize_value_old_sidebars_widgets_data' ) );
		$this->manager->set_post_value( 'old_sidebars_widgets_data', $this->old_sidebars_widgets ); // Override any value cached in changeset.

		// retrieve_widgets() looks at the global $sidebars_widgets
		$sidebars_widgets = $this->old_sidebars_widgets;
		$sidebars_widgets = retrieve_widgets( 'customize' );
		add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 );
		// reset global cache var used by wp_get_sidebars_widgets()
		unset( $GLOBALS['_wp_sidebars_widgets'] );

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Version Description
3.9.0 Introduced.

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