<?php

/**

 * @file

 * Administration pages for image settings.

 */

/**

 * Menu callback; Listing of all current image styles.

 */

function image_style_list() {

  $page = array();

  $styles = image_styles();

  $page['image_style_list'] = array(

    '#markup' => theme('image_style_list', array('styles' => $styles)),

    '#attached' => array(

      'css' => array(drupal_get_path('module', 'image') . '/image.admin.css' => array()),

    ),

  );

  return $page;

}

/**

 * Form builder; Edit an image style name and effects order.

 *

 * @param $form_state

 *   An associative array containing the current state of the form.

 * @param $style

 *   An image style array.

 * @ingroup forms

 * @see image_style_form_submit()

 */

function image_style_form($form, &$form_state, $style) {

  $title = t('Edit %name style', array('%name' => $style['label']));

  drupal_set_title($title, PASS_THROUGH);

  // Adjust this form for styles that must be overridden to edit.

  $editable = (bool) ($style['storage'] & IMAGE_STORAGE_EDITABLE);

  if (!$editable && empty($form_state['input'])) {

    drupal_set_message(t('This image style is currently being provided by a module. Click the "Override defaults" button to change its settings.'), 'warning');

  }

  $form_state['image_style'] = $style;

  $form['#tree'] = TRUE;

  $form['#attached']['css'][drupal_get_path('module', 'image') . '/image.admin.css'] = array();

  // Show the thumbnail preview.

  $form['preview'] = array(

    '#type' => 'item',

    '#title' => t('Preview'),

    '#markup' => theme('image_style_preview', array('style' => $style)),

  );

  // Show the Image Style label.

  $form['label'] = array(

    '#type' => 'textfield',

    '#title' => t('Image style name'),

    '#default_value' => $style['label'],

    '#disabled' => !$editable,

    '#required' => TRUE,

  );

  // Allow the name of the style to be changed, unless this style is

  // provided by a module's hook_default_image_styles().

  $form['name'] = array(

    '#type' => 'machine_name',

    '#size' => '64',

    '#default_value' => $style['name'],

    '#disabled' => !$editable,

    '#description' => t('The name is used in URLs for generated images. Use only lowercase alphanumeric characters, underscores (_), and hyphens (-).'),

    '#required' => TRUE,

    '#machine_name' => array(

      'exists' => 'image_style_load',

      'source' => array('label'),

      'replace_pattern' => '[^0-9a-z_\-]',

      'error' => t('Please only use lowercase alphanumeric characters, underscores (_), and hyphens (-) for style names.'),

    ),

  );

  // Build the list of existing image effects for this image style.

  $form['effects'] = array(

    '#theme' => 'image_style_effects',

  );

  foreach ($style['effects'] as $key => $effect) {

    $form['effects'][$key]['#weight'] = isset($form_state['input']['effects']) ? $form_state['input']['effects'][$key]['weight'] : NULL;

    $form['effects'][$key]['label'] = array(

      '#markup' => $effect['label'],

    );

    $form['effects'][$key]['summary'] = array(

      '#markup' => isset($effect['summary theme']) ? theme($effect['summary theme'], array('data' => $effect['data'])) : '',

    );

    $form['effects'][$key]['weight'] = array(

      '#type' => 'weight',

      '#title' => t('Weight for @title', array('@title' => $effect['label'])),

      '#title_display' => 'invisible',

      '#default_value' => $effect['weight'],

      '#access' => $editable,

    );

    // Only attempt to display these fields for editable styles as the 'ieid'

    // key is not set for styles defined in code.

    if ($editable) {

      $form['effects'][$key]['configure'] = array(

        '#type' => 'link',

        '#title' => t('edit'),

        '#href' => 'admin/config/media/image-styles/edit/' . $style['name'] . '/effects/' . $effect['ieid'],

        '#access' => $editable && isset($effect['form callback']),

      );

      $form['effects'][$key]['remove'] = array(

        '#type' => 'link',

        '#title' => t('delete'),

        '#href' => 'admin/config/media/image-styles/edit/' . $style['name'] . '/effects/' . $effect['ieid'] . '/delete',

        '#access' => $editable,

      );

    }

  }

  // Build the new image effect addition form and add it to the effect list.

  $new_effect_options = array();

  foreach (image_effect_definitions() as $effect => $definition) {

    $new_effect_options[$effect] = check_plain($definition['label']);

  }

  $form['effects']['new'] = array(

    '#tree' => FALSE,

    '#weight' => isset($form_state['input']['weight']) ? $form_state['input']['weight'] : NULL,

    '#access' => $editable,

  );

  $form['effects']['new']['new'] = array(

    '#type' => 'select',

    '#title' => t('Effect'),

    '#title_display' => 'invisible',

    '#options' => $new_effect_options,

    '#empty_option' => t('Select a new effect'),

  );

  $form['effects']['new']['weight'] = array(

    '#type' => 'weight',

    '#title' => t('Weight for new effect'),

    '#title_display' => 'invisible',

    '#default_value' => count($form['effects']) - 1,

  );

  $form['effects']['new']['add'] = array(

    '#type' => 'submit',

    '#value' => t('Add'),

    '#validate' => array('image_style_form_add_validate'),

    '#submit' => array('image_style_form_submit', 'image_style_form_add_submit'),

  );

  // Show the Override or Submit button for this style.

  $form['actions'] = array('#type' => 'actions');

  $form['actions']['override'] = array(

    '#type' => 'submit',

    '#value' => t('Override defaults'),

    '#validate' => array(),

    '#submit' => array('image_style_form_override_submit'),

    '#access' => !$editable,

  );

  $form['actions']['submit'] = array(

    '#type' => 'submit',

    '#value' => t('Update style'),

    '#access' => $editable,

  );

  return $form;

}

/**

 * Validate handler for adding a new image effect to an image style.

 */

function image_style_form_add_validate($form, &$form_state) {

  if (!$form_state['values']['new']) {

    form_error($form['effects']['new']['new'], t('Select an effect to add.'));

  }

}

/**

 * Submit handler for adding a new image effect to an image style.

 */

function image_style_form_add_submit($form, &$form_state) {

  $style = $form_state['image_style'];

  // Check if this field has any configuration options.

  $effect = image_effect_definition_load($form_state['values']['new']);

  // Load the configuration form for this option.

  if (isset($effect['form callback'])) {

    $path = 'admin/config/media/image-styles/edit/' . $form_state['image_style']['name'] . '/add/' . $form_state['values']['new'];

    $form_state['redirect'] = array($path, array('query' => array('weight' => $form_state['values']['weight'])));

  }

  // If there's no form, immediately add the image effect.

  else {

    $effect['isid'] = $style['isid'];

    $effect['weight'] = $form_state['values']['weight'];

    image_effect_save($effect);

    drupal_set_message(t('The image effect was successfully applied.'));

  }

}

/**

 * Submit handler for overriding a module-defined style.

 */

function image_style_form_override_submit($form, &$form_state) {

  drupal_set_message(t('The %style style has been overridden, allowing you to change its settings.', array('%style' => $form_state['image_style']['label'])));

  image_default_style_save($form_state['image_style']);

}

/**

 * Submit handler for saving an image style.

 */

function image_style_form_submit($form, &$form_state) {

  // Update the image style.

  $style = $form_state['image_style'];

  $style['name'] = $form_state['values']['name'];

  $style['label'] = $form_state['values']['label'];

  // Update image effect weights.

  if (!empty($form_state['values']['effects'])) {

    foreach ($form_state['values']['effects'] as $ieid => $effect_data) {

      if (isset($style['effects'][$ieid])) {

        $effect = $style['effects'][$ieid];

        $effect['weight'] = $effect_data['weight'];

        image_effect_save($effect);

      }

    }

  }

  image_style_save($style);

  if ($form_state['values']['op'] == t('Update style')) {

    drupal_set_message(t('Changes to the style have been saved.'));

  }

  $form_state['redirect'] = 'admin/config/media/image-styles/edit/' . $style['name'];

}

/**

 * Form builder; Form for adding a new image style.

 *

 * @ingroup forms

 * @see image_style_add_form_submit()

 */

function image_style_add_form($form, &$form_state) {

  $form['label'] = array(

    '#type' => 'textfield',

    '#title' => t('Style name'),

    '#default_value' => '',

    '#required' => TRUE,

  );

  $form['name'] = array(

    '#type' => 'machine_name',

    '#description' => t('The name is used in URLs for generated images. Use only lowercase alphanumeric characters, underscores (_), and hyphens (-).'),

    '#size' => '64',

    '#required' => TRUE,

    '#machine_name' => array(

      'exists' => 'image_style_load',

      'source' => array('label'),

      'replace_pattern' => '[^0-9a-z_\-]',

      'error' => t('Please only use lowercase alphanumeric characters, underscores (_), and hyphens (-) for style names.'),

    ),

  );

  $form['submit'] = array(

    '#type' => 'submit',

    '#value' => t('Create new style'),

  );

  return $form;

}

/**

 * Submit handler for adding a new image style.

 */

function image_style_add_form_submit($form, &$form_state) {

  $style = array(

    'name' => $form_state['values']['name'],

    'label' => $form_state['values']['label'],

  );

  $style = image_style_save($style);

  drupal_set_message(t('Style %name was created.', array('%name' => $style['label'])));

  $form_state['redirect'] = 'admin/config/media/image-styles/edit/' . $style['name'];

}

/**

 * Element validate function to ensure unique, URL safe style names.

 *

 * This function is no longer used in Drupal core since image style names are

 * now validated using #machine_name functionality. It is kept for backwards

 * compatibility (since non-core modules may be using it) and will be removed

 * in Drupal 8.

 */

function image_style_name_validate($element, $form_state) {

  // Check for duplicates.

  $styles = image_styles();

  if (isset($styles[$element['#value']]) && (!isset($form_state['image_style']['isid']) || $styles[$element['#value']]['isid'] != $form_state['image_style']['isid'])) {

    form_set_error($element['#name'], t('The image style name %name is already in use.', array('%name' => $element['#value'])));

  }

  // Check for illegal characters in image style names.

  if (preg_match('/[^0-9a-z_\-]/', $element['#value'])) {

    form_set_error($element['#name'], t('Please only use lowercase alphanumeric characters, underscores (_), and hyphens (-) for style names.'));

  }

}

/**

 * Form builder; Form for deleting an image style.

 *

 * @param $style

 *   An image style array.

 *

 * @ingroup forms

 * @see image_style_delete_form_submit()

 */

function image_style_delete_form($form, &$form_state, $style) {

  $form_state['image_style'] = $style;

  $replacement_styles = array_diff_key(image_style_options(TRUE, PASS_THROUGH), array($style['name'] => ''));

  $form['replacement'] = array(

    '#title' => t('Replacement style'),

    '#type' => 'select',

    '#options' => $replacement_styles,

    '#empty_option' => t('No replacement, just delete'),

  );

  return confirm_form(

    $form,

    t('Optionally select a style before deleting %style', array('%style' => $style['label'])),

    'admin/config/media/image-styles',

    t('If this style is in use on the site, you may select another style to replace it. All images that have been generated for this style will be permanently deleted.'),

    t('Delete'),  t('Cancel')

  );

}

/**

 * Submit handler to delete an image style.

 */

function image_style_delete_form_submit($form, &$form_state) {

  $style = $form_state['image_style'];

  image_style_delete($style, $form_state['values']['replacement']);

  drupal_set_message(t('Style %name was deleted.', array('%name' => $style['label'])));

  $form_state['redirect'] = 'admin/config/media/image-styles';

}

/**

 * Confirmation form to revert a database style to its default.

 */

function image_style_revert_form($form, &$form_state, $style) {

  $form_state['image_style'] = $style;

  return confirm_form(

    $form,

    t('Revert the %style style?', array('%style' => $style['label'])),

    'admin/config/media/image-styles',

    t('Reverting this style will delete the customized settings and restore the defaults provided by the @module module.', array('@module' => $style['module'])),

    t('Revert'),  t('Cancel')

  );

}

/**

 * Submit handler to convert an overridden style to its default.

 */

function image_style_revert_form_submit($form, &$form_state) {

  drupal_set_message(t('The %style style has been reverted to its defaults.', array('%style' => $form_state['image_style']['label'])));

  image_default_style_revert($form_state['image_style']);

  $form_state['redirect'] = 'admin/config/media/image-styles';

}

/**

 * Form builder; Form for adding and editing image effects.

 *

 * This form is used universally for editing all image effects. Each effect adds

 * its own custom section to the form by calling the form function specified in

 * hook_image_effects().

 *

 * @param $form_state

 *   An associative array containing the current state of the form.

 * @param $style

 *   An image style array.

 * @param $effect

 *   An image effect array.

 *

 * @ingroup forms

 * @see hook_image_effects()

 * @see image_effects()

 * @see image_resize_form()

 * @see image_scale_form()

 * @see image_rotate_form()

 * @see image_crop_form()

 * @see image_effect_form_submit()

 */

function image_effect_form($form, &$form_state, $style, $effect) {

  if (!empty($effect['data'])) {

    $title = t('Edit %label effect', array('%label' => $effect['label']));

  }

  else{

    $title = t('Add %label effect', array('%label' => $effect['label']));

  }

  drupal_set_title($title, PASS_THROUGH);

  $form_state['image_style'] = $style;

  $form_state['image_effect'] = $effect;

  // If no configuration for this image effect, return to the image style page.

  if (!isset($effect['form callback'])) {

    drupal_goto('admin/config/media/image-styles/edit/' . $style['name']);

  }

  $form['#tree'] = TRUE;

  $form['#attached']['css'][drupal_get_path('module', 'image') . '/image.admin.css'] = array();