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Add basic language install logic #201

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Add basic language install logic #201

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54 changes: 54 additions & 0 deletions class-languages.php
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,7 @@ public function options() {
$vars[ 'langs' ] = $langs;
$vars[ 'default_lang' ] = $this->default_lang;
$vars[ 'active_langs' ] = $this->get_active_langs();
$vars[ 'installable_langs' ] = $this->get_installable_langs();
$this->render_admin( 'options-available-languages.php', $vars );
}

Expand Down Expand Up @@ -384,6 +385,14 @@ protected function maybe_process_languages() {
$this->set_admin_error( __( 'You must set your default language as public.', 'babble' ) );
}
}
// Add new language
if ( @ $_POST['add_lang'] ) {
require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );
$download = wp_download_language_pack( $_POST['add_lang'] );
if ( ! $download ) {
$this->set_admin_error( __( 'The selected language could not be added.', 'babble' ) );
}
}
// Finish up, redirecting if we're all OK
if ( ! $this->errors ) {
// Save the public languages
Expand Down Expand Up @@ -525,6 +534,51 @@ protected function set_defaults() {
$this->default_lang = $locale;
$this->public_langs = array( $locale );
}

/**
* Check if we can install language packs.
*
* As long as this plugin supports WordPress versions below 4.0.0,
* we should check for availability of the translations api.
* If the translations api is available, use its
* wp_can_install_language_pack function.
*
* @see wp_can_install_language_pack()
*
* @return bool
**/
protected function can_install_language_pack() {
if ( ! file_exists( ABSPATH . 'wp-admin/includes/translation-install.php' ) ) {
return false;
}
require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );
return wp_can_install_language_pack();
}

/**
* Return an array of languages which can be installed via the
* translations api, minus the already available languages.
*
* @see get_available_languages()
* @see wp_get_available_translations()
*
* @return array
**/
protected function get_installable_langs() {

if ( ! $this->can_install_language_pack() ) {
return array();
}

require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );

// Refresh the current languages
$this->parse_available_languages();
// Merge in our previously set language settings
$langs = $this->merge_lang_sets( $this->available_langs, $this->lang_prefs );
$available_translations = wp_get_available_translations();
return array_diff_key( $available_translations, $langs );
}
}

global $bbl_languages;
Expand Down
12 changes: 12 additions & 0 deletions templates-admin/options-available-languages.php
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,18 @@
</tbody>
</table>

<?php if ( $installable_langs ) { ?>
<p>
<label for="add_lang"><?php esc_html_e( 'Add New Language', 'babble' ); ?></label>
<select name="add_lang">
<option disabled="disabled" selected="selected"><?php esc_html_e( 'Select Language', 'babble' ); ?></option>
<?php foreach ( $installable_langs as $lang ) { ?>
<option value="<?php echo esc_attr( $lang['language'] ); ?>"><?php echo esc_html( $lang['native_name'] ); ?></option>
<?php } ?>
</select>
</p>
<?php } ?>

<?php submit_button( __( 'Save Changes', 'babble' ) ); ?>

</form>
Expand Down