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Drupal: modul za lazy load.

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[Lazy-load][1] is a simple Drupal module which integrates [bLazy][2]
lazy-loading script via image field *display formatters* and *input-filters* for
inline images and iframes.
There is another contributed module utilizing its namesake, [Blazy][3]. Make
sure to check it out, especially if you need more advanced features and support
for many features out of the box.
This module started to fill-in the only area Blazy module lacks of;
**inline-images** and **inline-iframes**. Now, Lazy-load can also be enabled for
each image field as well.
You can use [Lazy-load][1] module tandem with [Blazy][3], though that is not a
requirement.
## Requirements
* **[Libraries API][5]** module (Drupal 7 only)
* **bLazy v1.8.2** script as a library item
## Installing Manually
- [Download bLazy][4] from https://github.com/dinbror/blazy
- Extract the downloaded file,
- rename *blazy-master* directory to *blazy*,
- copy the folder into one of the following places that *Libraries API*
module supports, `sites/all/libraries` (or site-specific libraries folder):
i.e.: `sites/all/libraries/blazy/blazy.min.js`
## Installing via Composer
- Run `composer require --prefer-dist composer/installers` to ensure that you
have the `composer/installers` package installed. This package facilitates the
installation of packages into directories other than `/vendor`
(e.g. `/libraries`) using Composer.
- If your `composer.json` doesn’t already have a definition for the libraries
path, define one similar to the one below, depending on your setup:
``` json
"extra": {
"installer-paths": {
"web/sites/all/libraries/{$name}": ["type:drupal-library"]
}
}
```
- Add following to the “repositories” section of `composer.json`:
``` json
"repositories": [
{
"type": "package",
"package": {
"name": "dinbror/blazy",
"version": "1.8.2",
"type": "drupal-library",
"extra": {
"installer-name": "blazy"
},
"source": {
"type": "git",
"url": "https://github.com/dinbror/blazy",
"reference": "1.8.2"
}
}
}
]
```
- Install the required **Blazy** library:
`composer require 'dinbror/blazy:1.8.2'`
- Install this module:
`composer require 'drupal/lazy:^1.0'`
## Usage
There are two options to set up for your site to lazy-load images. And both options share the same [settings](/admin/config/content/lazy).
1. Image fields
2. Inline images and Iframes managed in rich-text fields (ckeditor)
### Image Fields
1. Go to **Manage display** page of the entity type you want to enable lazy-loading. *i.e. Article*
2. Select the **display** you want the change. *i.e. Teaser*
3. Change the format from `Image` to
`Lazy-load image` to enable lazy-loading for the selected field.
The `Image` formatter settings for
_image style_ and _link image to_ should remain unchanged.
### Inline images and Iframes
1. **Configure** the [text format](/admin/config/content/formats) you want to enable lazy-loading. *i.e. Full HTML*
2. Check **Lazy-load images and IFRAMEs via bLazy** option to enable the filter, and save configuration.
3. Go to [Lazy-load settings](/admin/config/content/lazy).
4. Check the boxes for the inline elements to be lazy-loaded via filter `<img>` `<iframe>`
5. Save configuration
*Repeat steps 1-2 for each text-format you want to enable lazy-loading.*
To disable lazy-loading for specific image or iframes, add **skip-class** to the
class attribute. Default value (no-b-lazy) can be changed in the configuration.
``` html
<img class="no-b-lazy" src="this-image-will-load-normal" alt="">
```
### Blazy plugin can be manupulated in your theme/module javascript:
The options in **Blazy configuration** section of the settings form are the default options of the Blazy library. Refer to [Blazy plugin documentation][5] for each setting.
#### Get Blazy plugin options.
```js
let opt = Drupal.settings.lazy ? Drupal.settings.lazy : {};
```
#### Access Blazy's public functions:
| Function | Description |
|:--|:--|
| `Drupal.lazy.revalidate();` | Revalidates document for visible images. Useful if you add images with scripting or ajax |
| `Drupal.lazy.load(element(s), force);` | Forces the given element(s) to load if not collapsed. If you also want to load a collapsed/hidden elements you can add true as the second parameter. You can pass a single element or a list of elements. Tested with getElementById, getElementsByClassName, querySelectorAll, querySelector and jQuery selector. |
| `Drupal.lazy.destroy();` | Unbind events and resets image array |
## Use Case
If you have numerous images and/or iframes in your content, it could become
a challenge to update that content to make compatible for lazy-loading. In
most cases those updates needs to be handled manually, because most of the time
if not all, the body content (HTML) doesn't follow a pattern to update
them programmatically.
This is the main reason I created this module, to avoid a need for altering body
content manually while making them easy to lazy-load.
**The *Lazy-load* filter doesn't make any changes to existing content.** It only
rewrites the `<img>` and/or `<iframe>` tags in already rendered output to have
them compatible for bLazy script to lazy-load. Since the filtered output is
cached, there should not be any changes in performance.
[1]: https://www.drupal.org/project/lazy
[2]: http://dinbror.dk/blazy/
[3]: https://www.drupal.org/project/blazy
[4]: https://github.com/dinbror/blazy/archive/master.zip
[5]: https://www.drupal.org/project/libraries

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<?php
/**
* @file
* Configuration form for Lazy-load.
*/
/**
* Lazy-load configuration form.
*/
function lazy_configuration_form($form, $form_state) {
$defaults = variable_get('lazy_filter_defaults');
$filter_enabled = lazy_is_filter_enabled();
$form['settings'] = array(
'#type' => 'fieldset',
'#title' => t('Global settings'),
'#collapsible' => FALSE,
);
$form['settings']['lazy_filter_alter_tag'] = array(
'#type' => 'checkboxes',
'#title' => t('Select the inline elements to be lazy-loaded via filter.'),
'#options' => array(
'img' => t('Images (%img tags)', array('%img' => '<img>')),
'iframe' => t('Iframes (%iframe tags)', array('%iframe' => '<iframe>')),
),
'#default_value' => variable_get('lazy_filter_alter_tag', $defaults['lazy_filter_alter_tag']),
'#description' => t('Only selected tags will be lazy-loaded in activated text-formats.'),
'#disabled' => !$filter_enabled,
);
$form['settings']['lazy_filter_placeholderSrc'] = array(
'#type' => 'textfield',
'#title' => t('Placeholder image URL'),
'#description' => t('Default is %val', array('%val' => $defaults['lazy_filter_placeholderSrc'])),
'#default_value' => variable_get('lazy_filter_placeholderSrc', $defaults['lazy_filter_placeholderSrc']),
'#size' => 100,
);
$form['paths'] = array(
'#type' => 'fieldset',
'#title' => t('Disabled pages'),
'#description' => t('<p>There could be pages Lazy-loading should be disabled; set them here.</p>'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['paths']['lazy_disabled_paths'] = array(
'#type' => 'textarea',
'#title' => t('Lazy-loading is disabled for both <em>image fields</em> and <em>inline images/iframes</em> in content on following pages'),
'#default_value' => variable_get('lazy_disabled_paths', $defaults['lazy_disabled_paths']),
'#description' => t('Specify pages by using their paths. Enter one path per line.'),
);
$form['blazy'] = array(
'#type' => 'fieldset',
'#title' => t('bLazy configuration'),
'#description' => t('<p><a href="!url">bLazy</a> is a lightweight lazy loading and multi-serving image script created by Bjoern Klinggaard. See its website for usage details and demos.</p>', array(
'!url' => 'http://dinbror.dk/blog/blazy/',
)),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['blazy']['lazy_filter_loadInvisible'] = array(
'#type' => 'checkbox',
'#title' => t('loadInvisible'),
'#description' => t('If checked loads invisible (hidden) elements. Default is %val', array('%val' => ($defaults['lazy_filter_loadInvisible']) ? 'checked' : 'unchecked')),
'#default_value' => variable_get('lazy_filter_loadInvisible', $defaults['lazy_filter_loadInvisible']),
'#return_value' => TRUE,
);
$form['blazy']['lazy_filter_offset'] = array(
'#type' => module_exists('elements') ? 'numberfield' : 'textfield',
'#title' => t('offset'),
'#description' => t('The offset controls how early you want the elements to be loaded before they’re visible. Default is %val, so %val pixel before an element is visible it’ll start loading.', array('%val' => $defaults['lazy_filter_offset'])),
'#default_value' => variable_get('lazy_filter_offset', $defaults['lazy_filter_offset']),
);
$form['blazy']['lazy_filter_saveViewportOffsetDelay'] = array(
'#type' => module_exists('elements') ? 'numberfield' : 'textfield',
'#title' => t('saveViewportOffsetDelay'),
'#description' => t('Delay for how often it should call the saveViewportOffset function on resize. Default is %val', array('%val' => $defaults['lazy_filter_saveViewportOffsetDelay'])),
'#default_value' => variable_get('lazy_filter_saveViewportOffsetDelay', $defaults['lazy_filter_saveViewportOffsetDelay']),
);
$form['blazy']['lazy_filter_validateDelay'] = array(
'#type' => module_exists('elements') ? 'numberfield' : 'textfield',
'#title' => t('validateDelay'),
'#description' => t('Delay for how often it should call the validate function on scroll/resize. Default is %val', array('%val' => $defaults['lazy_filter_validateDelay'])),
'#default_value' => variable_get('lazy_filter_validateDelay', $defaults['lazy_filter_validateDelay']),
);
$form['blazy']['lazy_filter_selector'] = array(
'#type' => 'textfield',
'#title' => t('Selector class'),
'#description' => t('Element selector for elements that should lazy load. Do not include a leading period. Default is %val', array('%val' => $defaults['lazy_filter_selector'])),
'#default_value' => variable_get('lazy_filter_selector', $defaults['lazy_filter_selector']),
);
$form['blazy']['lazy_filter_skipClass'] = array(
'#type' => 'textfield',
'#title' => t('skipClass'),
'#description' => t('Elements having this class name will be ignored. Default is %val', array('%val' => $defaults['lazy_filter_skipClass'])),
'#default_value' => variable_get('lazy_filter_skipClass', $defaults['lazy_filter_skipClass']),
);
$form['blazy']['lazy_filter_errorClass'] = array(
'#type' => 'textfield',
'#title' => t('errorClass'),
'#description' => t('The classname an element will get if something goes wrong. Default is %val', array('%val' => $defaults['lazy_filter_errorClass'])),
'#default_value' => variable_get('lazy_filter_errorClass', $defaults['lazy_filter_errorClass']),
);
$form['blazy']['lazy_filter_successClass'] = array(
'#type' => 'textfield',
'#title' => t('successClass'),
'#description' => t('The classname an element will get when loaded. Default is %val', array('%val' => $defaults['lazy_filter_successClass'])),
'#default_value' => variable_get('lazy_filter_successClass', $defaults['lazy_filter_successClass']),
);
$form['blazy']['lazy_filter_src'] = array(
'#type' => 'textfield',
'#title' => t('src'),
'#description' => t('Attribute where the original element source will be assigned. Do not change this unless attribute is used for other purposes. Default is %val', array('%val' => $defaults['lazy_filter_src'])),
'#default_value' => variable_get('lazy_filter_src', $defaults['lazy_filter_src']),
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Save configuration'),
);
// Notify the user if the library is not available, and disable the form.
$library_installed = variable_get('lazy_library_installed');
if (!$library_installed) {
drupal_set_message(t('The bLazy library could not be found.'), 'warning');
drupal_set_message(t('Follow the instructions in the README.md file or in the <a href="!url">help</a> page for installing the bLazy library.', array('!url' => url('admin/help/lazy'))), 'status');
$form['submit']['#attributes']['disabled'] = TRUE;
}
return $form;
}
/**
* Submit handler for lazy_configuration_form().
*/
function lazy_configuration_form_submit($form, &$form_state) {
$int_value = array(
'lazy_filter_offset',
'lazy_filter_saveViewportOffsetDelay',
'lazy_filter_validateDelay',
);
$bool_value = array(
'lazy_filter_loadInvisible',
);
// Exclude unnecessary elements.
form_state_values_clean($form_state);
foreach ($form_state['values'] as $key => $value) {
if (in_array($key, $int_value)) {
$value = intval($value);
}
if (in_array($key, $bool_value)) {
$value = !!$value;
}
if ('string' === gettype($value)) {
$value = trim($value);
}
variable_set($key, $value);
}
drupal_set_message(t('The configuration options have been saved.'));
}

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name = Lazy-load
description = "This module integrates bLazy script via image field display formatters and input-filters for inline images and iframes."
core = 7.x
dependencies[] = drupal:filter
dependencies[] = libraries
package = "Input filters"
configure = admin/config/content/lazy
; Information added by Drupal.org packaging script on 2019-04-22
version = "7.x-1.4"
core = "7.x"
project = "lazy"
datestamp = "1555908787"

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<?php
/**
* @file
* Install, update, and uninstall functions for the Lazy-load module.
*/
/**
* Implements hook_install().
*/
function lazy_install() {
$defaults = array(
'lazy_filter_errorClass' => 'b-error',
'lazy_filter_loadInvisible' => FALSE,
'lazy_filter_offset' => 100,
'lazy_filter_saveViewportOffsetDelay' => 50,
'lazy_filter_selector' => 'b-lazy',
'lazy_filter_alter_tag' => array('img' => 'img', 'iframe' => 'iframe'),
'lazy_filter_skipClass' => 'no-b-lazy',
'lazy_filter_src' => 'data-src',
'lazy_filter_successClass' => 'b-loaded',
'lazy_filter_validateDelay' => 25,
'lazy_filter_placeholderSrc' => 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==',
'lazy_disabled_paths' => 'rss.xml',
);
variable_set('lazy_filter_defaults', $defaults);
foreach ($defaults as $key => $value) {
variable_set($key, $value);
}
}
/**
* Implements hook_enable().
*/
function lazy_enable() {
$options = array(
'!config' => url('admin/config/content/lazy'),
'%filter' => 'Lazy-load',
'!path' => url('admin/config/content/formats'),
);
$message = t('The <a href="!config">Lazy-load</a> module was installed. The new %filter filter should be enabled in desired <a href="!path">text-formats</a>.', $options);
drupal_set_message($message, 'warning');
}
/**
* Implements hook_uninstall().
*/
function lazy_uninstall() {
variable_del('lazy_filter_defaults');
variable_del('lazy_filter_errorClass');
variable_del('lazy_filter_loadInvisible');
variable_del('lazy_filter_offset');
variable_del('lazy_filter_saveViewportOffsetDelay');
variable_del('lazy_filter_selector');
variable_del('lazy_filter_alter_tag');
variable_del('lazy_filter_skipClass');
variable_del('lazy_filter_src');
variable_del('lazy_filter_successClass');
variable_del('lazy_filter_validateDelay');
variable_del('lazy_filter_placeholderSrc');
variable_del('lazy_filter_image_fields');
variable_del('lazy_library_installed');
variable_del('lazy_disabled_paths');
$module = 'lazy';
$name = 'lazy_filter';
db_delete('filter')
->condition('module', $module)
->condition('name', $name)
->execute();
// Revert image field formatters back to `image`.
$lazy_enabled_fields = array();
$field_map = field_info_field_map();
$i = 1;
$max_messages = 10;
foreach ($field_map as $field_name => $field) {
if ($field['type'] === 'image') {
foreach ($field['bundles'] as $entity_type => $bundle) {
$field_instance = field_info_instance($entity_type, $field_name, $bundle[0]);
foreach ($field_instance['display'] as $display_name => $display) {
if ($field_instance['display'][$display_name]['module'] === 'lazy') {
$field_instance['display'][$display_name]['type'] = 'image';
$field_instance['display'][$display_name]['module'] = 'image';
field_update_instance($field_instance);
if ($i <= $max_messages) {
drupal_set_message(t('The %label (<code>!field_name</code>) field in %bundle (!entity_type) type is reverted back in the %display display mode.', array(
'%label' => $field_instance['label'],
'!field_name' => $field_instance['field_name'],
'%bundle' => $field_instance['bundle'],
'!entity_type' => $field_instance['entity_type'],
'%display' => $display_name,
)),
'warning',
TRUE
);
}
$i++;
}
}
}
}
}
if ($i > $max_messages) {
drupal_set_message(t('Also reverted back %no other image fields.', array('%no' => $i - $max_messages)));
}
}
/**
* Implements hook_requirements().
*/
function lazy_requirements($phase) {
$requirements = array();
$t = get_t();
if ($phase == 'runtime') {
$blazy = libraries_detect('blazy');
$requirements['blazy'] = array(
'title' => $t('bLazy'),
);
if ($blazy['installed']) {
$requirements['blazy']['value'] = $blazy['version'];
$requirements['blazy']['severity'] = REQUIREMENT_OK;
}
else {
$requirements['blazy']['value'] = $blazy['error'];
$requirements['blazy']['description'] = $blazy['error message'];
$requirements['blazy']['severity'] = REQUIREMENT_ERROR;
}
variable_set('lazy_library_installed', $blazy['installed']);
}
return $requirements;
}
/**
* Update module default values.
*/
function lazy_update_7100() {
// Get current default values.
$defaults = variable_get('lazy_filter_defaults');
// Update it from old string value to new array value.
$defaults['lazy_filter_alter_tag'] = array('img' => 'img', 'iframe' => 'iframe');
// Fix already existing value with new format.
$lazy_filter_alter_tag = variable_get('lazy_filter_alter_tag');
switch ($lazy_filter_alter_tag) {
case 'img':
variable_set('lazy_filter_alter_tag', array('img' => 'img', 'iframe' => 0));
break;
case 'iframe':
variable_set('lazy_filter_alter_tag', array('img' => 0, 'iframe' => 'iframe'));
break;
default:
variable_set('lazy_filter_alter_tag', $defaults['lazy_filter_alter_tag']);
break;
}
// Add new setting to support image fields.
$defaults['lazy_filter_image_fields'] = FALSE;
// Update the defaults with new values.
variable_set('lazy_filter_defaults', $defaults);
variable_set('lazy_filter_image_fields', $defaults['lazy_filter_image_fields']);
}
/**
* Disable module, if bLazy library is not installed yet.
*/
function lazy_update_7101() {
$blazy = libraries_detect('blazy');
variable_set('lazy_library_installed', $blazy['installed']);
}
/**
* New configuration option to set which pages should disable Lazy-loading.
*/
function lazy_update_7102() {
$defaults = variable_get('lazy_filter_defaults');
$defaults['lazy_disabled_paths'] = 'rss.xml';
variable_set('lazy_filter_defaults', $defaults);
variable_set('lazy_disabled_paths', $defaults['lazy_disabled_paths']);
}
/**
* Image fields now use display formatter to enable lazy-loading per field.
*/
function lazy_update_7103() {
$image_fields = variable_get('lazy_filter_image_fields');
if ($image_fields) {
$field_map = field_info_field_map();
foreach ($field_map as $field_name => $field) {
if ($field['type'] === 'image') {
foreach ($field['bundles'] as $entity_type => $bundle) {
$field_instance = field_info_instance($entity_type, $field_name, $bundle[0]);
foreach ($field_instance['display'] as $display_name => $display) {
if ($field_instance['display'][$display_name]['type'] === 'image') {
$field_instance['display'][$display_name]['type'] = 'lazy';
$field_instance['display'][$display_name]['module'] = 'lazy';
field_update_instance($field_instance);
}
}
}
}
}
}
variable_del('lazy_filter_image_fields');
}

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(function ($) {
'use strict';
Drupal.behaviors.lazy = {
attach: function (context, settings) {
var options = settings.lazy ? settings.lazy : {};
Drupal.lazy = new Blazy(options);
}
};
})(jQuery);

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<?php
/**
* @file
* Module file for Lazy-load.
*/
/**
* Implements hook_menu().
*/
function lazy_menu() {
return array(
'admin/config/content/lazy' => array(
'title' => 'Lazy-load',
'description' => 'Configure how images and iframes are lazy-loaded.',
'page callback' => 'drupal_get_form',
'page arguments' => array('lazy_configuration_form'),
'file' => 'lazy.admin.inc',
'access arguments' => array('administer filters'),
),
);
}
/**
* Implements hook_init().
*/
function lazy_init() {
$library = lazy_is_library_installed();
}
/**
* Implements hook_help().
*/
function lazy_help($path, $arg) {
switch ($path) {
case 'admin/help#lazy':
$filepath = dirname(__FILE__) . '/README.md';
if (file_exists($filepath)) {
$readme = file_get_contents($filepath);
}
if (!isset($readme)) {
return NULL;
}
if (module_exists('markdown')) {
$filters = module_invoke('markdown', 'filter_info');
$info = $filters['filter_markdown'];
if (function_exists($info['process callback'])) {
$output = $info['process callback']($readme, NULL);
}
else {
$output = '<pre>' . $readme . '</pre>';
}
}
else {
$output = '<pre>' . $readme . '</pre>';
}
return $output;
}
}
/**
* Implements hook_filter_info().
*/
function lazy_filter_info() {
$filters['lazy_filter'] = array(
'title' => t('Lazy-load images and IFRAMEs via bLazy'),
'default settings' => _filter_lazy_defaults(),
'process callback' => '_filter_lazy_process',
'cache' => TRUE,
'tips callback' => '_filter_lazy_tips',
'weight' => 20,
);
return $filters;
}
/**
* Callback to return configuration defaults.
*/
function _filter_lazy_defaults() {
return array(
'lazy_filter_errorClass' => variable_get('lazy_filter_errorClass'),
'lazy_filter_loadInvisible' => variable_get('lazy_filter_loadInvisible'),
'lazy_filter_offset' => variable_get('lazy_filter_offset'),
'lazy_filter_saveViewportOffsetDelay' => variable_get('lazy_filter_saveViewportOffsetDelay'),
'lazy_filter_selector' => variable_get('lazy_filter_selector'),
'lazy_filter_alter_tag' => variable_get('lazy_filter_alter_tag'),
'lazy_filter_skipClass' => variable_get('lazy_filter_skipClass'),
'lazy_filter_src' => variable_get('lazy_filter_src'),
'lazy_filter_successClass' => variable_get('lazy_filter_successClass'),
'lazy_filter_validateDelay' => variable_get('lazy_filter_validateDelay'),
'lazy_filter_placeholderSrc' => variable_get('lazy_filter_placeholderSrc'),
);
}
/**
* Implements callback_filter_process().
*/
function _filter_lazy_process($text, $filter) {
$opt_skipClass = variable_get('lazy_filter_skipClass');
$opt_selector = ltrim(variable_get('lazy_filter_selector'), '.');
$opt_tags = variable_get('lazy_filter_alter_tag');
$opt_src = (variable_get('lazy_filter_src') !== 'src') ? variable_get('lazy_filter_src') : 'data-filterlazy-src';
$opt_placeholderSrc = variable_get('lazy_filter_placeholderSrc');
$library_installed = variable_get('lazy_library_installed');
$disabled_paths = preg_split("/\s+/", variable_get('lazy_disabled_paths'));
if ($library_installed && !in_array(drupal_get_path_alias(), $disabled_paths)) {
$html_dom = filter_dom_load($text);
foreach ($opt_tags as $tag) {
$matches = $html_dom->getElementsByTagName($tag);
foreach ($matches as $element) {
$classes = $element->getAttribute('class');
$classes = (strlen($classes) > 0) ? explode(' ', $classes) : [];
if (!in_array($opt_skipClass, $classes)) {
$classes[] = $opt_selector;
$element->setAttribute('class', implode(' ', $classes));
$src = $element->getAttribute('src');
$element->removeAttribute('src');
$element->setAttribute($opt_src, $src);
$element->setAttribute('src', $opt_placeholderSrc);
}
}
}
$text = filter_dom_serialize($html_dom);
}
return trim($text);
}
/**
* Implements callback_filter_tips().
*/
function _filter_lazy_tips($filter, $format, $long = FALSE) {
$tags = variable_get('lazy_filter_alter_tag');
$tags = implode(' ', $tags);
$tags = trim(str_replace(array('0'), '', $tags));
switch ($tags) {
case 'img iframe':
return t('Both %img and %iframe elements are lazy-loaded.', array('%img' => '<img>', '%iframe' => '<iframe>'));
case 'img':
return t('%img elements are lazy-loaded.', array('%img' => '<img>', '%iframe' => '<iframe>'));
case 'iframe':
return t('%iframe elements are lazy-loaded.', array('%img' => '<img>', '%iframe' => '<iframe>'));
}
}
/**
* Is filter enabled for any of text-formats.
*/
function lazy_is_filter_enabled() {
$options = array(
':module' => 'lazy',
':name' => 'lazy_filter',
':status' => 1,
);
$enabled_formats = db_query('SELECT f.format, f.settings FROM {filter} f WHERE f.module = :module AND f.name = :name AND f.status = :status', $options)->fetchAllKeyed();
return count($enabled_formats) ? TRUE : FALSE;
}
/**
* Is any of the image fields using the `Lazy-load image` formatter?
*/
function lazy_is_field_enabled() {
$lazy_enabled_fields = array();
$field_map = field_info_field_map();
foreach ($field_map as $field_name => $field) {
if ($field['type'] === 'image') {
foreach ($field['bundles'] as $entity_type => $bundle) {
$field_instance = field_info_instance($entity_type, $field_name, $bundle[0]);
foreach ($field_instance['display'] as $display_name => $display) {
if ($field_instance['display'][$display_name]['type'] === 'lazy') {
$lazy_enabled_fields[] = implode('-', array(
$field_instance['entity_type'],
$field_instance['field_name'],
$display_name,
));
}
}
}
}
}
return !!count($lazy_enabled_fields);
}
/**
* Is Blazy library installed.
*/
function lazy_is_library_installed() {
$blazy = libraries_detect('blazy');
$blazy_installed = variable_get('lazy_library_installed');
if ($blazy['installed'] !== $blazy_installed) {
variable_set('lazy_library_installed', $blazy['installed']);
}
return $blazy['installed'];
}
/**
* Implements hook_page_build().
*/
function lazy_page_build(&$page) {
$filter_enabled = lazy_is_filter_enabled();
$field_enabled = lazy_is_field_enabled();
$library_installed = variable_get('lazy_library_installed');
if ($library_installed) {
if ($filter_enabled || $field_enabled) {
$path = drupal_get_path('module', 'lazy');
$page['page_bottom']['lazy'] = array(
'#attached' => array(),
);
$attached = &$page['page_bottom']['lazy']['#attached'];
$settings = array(
'errorClass' => variable_get('lazy_filter_errorClass'),
'loadInvisible' => variable_get('lazy_filter_loadInvisible'),
'offset' => intval(variable_get('lazy_filter_offset')),
'saveViewportOffsetDelay' => intval(variable_get('lazy_filter_saveViewportOffsetDelay')),
'selector' => '.' . variable_get('lazy_filter_selector'),
'src' => variable_get('lazy_filter_src'),
'successClass' => variable_get('lazy_filter_successClass'),
'validateDelay' => intval(variable_get('lazy_filter_validateDelay')),
);
$attached['js'][] = array(
'data' => array('lazy' => $settings),
'type' => 'setting',
);
$attached['libraries_load'][] = array('blazy');
$attached['js'][$path . '/lazy.js'] = array('every_page' => TRUE);
}
}
}
/**
* Implements hook_libraries_info().
*/
function lazy_libraries_info() {
$libraries['blazy'] = array(
'name' => 'bLazy',
'vendor url' => 'https://github.com/dinbror/blazy/',
'download url' => 'https://github.com/dinbror/blazy/archive/master.zip',
'version callback' => 'lazy_library_get_version',
'version arguments' => array(
'file' => 'package.json',
),
'files' => array(
'js' => array(
'blazy.min.js' => array(
'group' => JS_LIBRARY,
'every_page' => TRUE,
),
),
),
'variants' => array(
'source' => array(
'files' => array(
'js' => array(
'blazy.js' => array(
'group' => JS_LIBRARY,
'every_page' => TRUE,
),
),
),
),
),
);
return $libraries;
}
/**
* Callback function to return version from provided JSON file.
*/
function lazy_library_get_version($library, $options) {
$file = DRUPAL_ROOT . '/' . $library['library path'] . '/' . $options['file'];
if (empty($options['file']) || !file_exists($file)) {
return;
}
$file_content = file_get_contents($file);
$json = json_decode($file_content, TRUE);
return $json['version'];
}
/**
* Implements hook_field_formatter_info().
*/
function lazy_field_formatter_info() {
$formatters = array(
'lazy' => array(
'label' => t('Lazy-load image'),
'field types' => array(
'image',
),
'settings' => array(
'image_style' => '',
'image_link' => '',
),
),
);
return $formatters;
}
/**
* Implements hook_field_formatter_settings_form().
*/
function lazy_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
$image_styles = image_style_options(FALSE, PASS_THROUGH);
$element['image_style'] = array(
'#title' => t('Image style'),
'#type' => 'select',
'#default_value' => $settings['image_style'],
'#empty_option' => t('None (original image)'),
'#options' => $image_styles,
);
$link_types = array(
'content' => t('Content'),
'file' => t('File'),
);
$element['image_link'] = array(
'#title' => t('Link image to'),
'#type' => 'select',
'#default_value' => $settings['image_link'],
'#empty_option' => t('Nothing'),
'#options' => $link_types,
);
return $element;
}
/**
* Implements hook_field_formatter_settings_summary().
*/
function lazy_field_formatter_settings_summary($field, $instance, $view_mode) {
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
$summary = array();
$image_styles = image_style_options(FALSE, PASS_THROUGH);
// Unset possible 'No defined styles' option.
unset($image_styles['']);
// Styles could be lost because of enabled/disabled modules that defines
// their styles in code.
if (isset($image_styles[$settings['image_style']])) {
$summary[] = t('Image style: @style', array(
'@style' => $image_styles[$settings['image_style']],
));
}
else {
$summary[] = t('Original image');
}
$link_types = array(
'content' => t('Linked to content'),
'file' => t('Linked to file'),
);
// Display this setting only if image is linked.
if (isset($link_types[$settings['image_link']])) {
$summary[] = $link_types[$settings['image_link']];
}
return implode('<br />', $summary);
}
/**
* Implements hook_field_formatter_view().
*/
function lazy_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
$element = array();
// Check if the formatter involves a link.
if ($display['settings']['image_link'] == 'content') {
$uri = entity_uri($entity_type, $entity);
}
elseif ($display['settings']['image_link'] == 'file') {
$link_file = TRUE;
}
// Check if the formatter is set to lazy-load.
// if ($display['type'] === 'lazy') {}
foreach ($items as $delta => $item) {
if (isset($link_file)) {
$uri = array(
'path' => file_create_url($item['uri']),
'options' => array(),
);
}
$element[$delta] = array(
'#theme' => 'lazy_image_formatter',
'#item' => $item,
'#image_style' => $display['settings']['image_style'],
'#path' => isset($uri) ? $uri : '',
);
}
return $element;
}
/**
* Implements hook_theme().
*/
function lazy_theme() {
return array(
'lazy_image' => array(
'variables' => array(
'style_name' => NULL,
'path' => NULL,
'width' => NULL,
'height' => NULL,
'alt' => '',
'title' => NULL,
'attributes' => array(),
),
),
'lazy_image_formatter' => array(
'variables' => array(
'item' => NULL,
'path' => NULL,
'image_style' => NULL,
),
),
);
}
/**
* Returns HTML for an image.
*
* @param $variables
* An associative array containing:
* - path: Either the path of the image file (relative to base_path()) or a
* full URL.
* - width: The width of the image (if known).
* - height: The height of the image (if known).
* - alt: The alternative text for text-based browsers. HTML 4 and XHTML 1.0
* always require an alt attribute. The HTML 5 draft allows the alt
* attribute to be omitted in some cases. Therefore, this variable defaults
* to an empty string, but can be set to NULL for the attribute to be
* omitted. Usually, neither omission nor an empty string satisfies
* accessibility requirements, so it is strongly encouraged for code
* calling theme('image') to pass a meaningful value for this variable.
* - http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.8
* - http://www.w3.org/TR/xhtml1/dtds.html
* - http://dev.w3.org/html5/spec/Overview.html#alt
* - title: The title text is displayed when the image is hovered in some
* popular browsers.
* - attributes: Associative array of attributes to be placed in the img tag.
*/
function theme_lazy_image($variables) {
$opt_skipClass = variable_get('lazy_filter_skipClass');
$opt_selector = ltrim(variable_get('lazy_filter_selector'), '.');
$opt_src = (variable_get('lazy_filter_src') !== 'src') ? variable_get('lazy_filter_src') : 'data-filterlazy-src';
$opt_placeholderSrc = variable_get('lazy_filter_placeholderSrc');
$disabled_paths = preg_split("/\s+/", variable_get('lazy_disabled_paths'));
if ($variables['style_name']) {
// Determine the dimensions of the styled image.
$dimensions = array(
'width' => $variables['width'],
'height' => $variables['height'],
);
image_style_transform_dimensions($variables['style_name'], $dimensions);
$variables['width'] = $dimensions['width'];
$variables['height'] = $dimensions['height'];
// Determine the URL for the styled image.
$variables['path'] = image_style_url($variables['style_name'], $variables['path']);
}
// Skip Blazy rendering if...
//
// library is not available OR
// viewing a page listed in disabled pages
if (
!variable_get('lazy_library_installed') ||
in_array(drupal_get_path_alias(), $disabled_paths)
) {
return theme('image', $variables);
}
else {
// $defaults = _filter_lazy_defaults();
$attributes = $variables['attributes'];
$attributes['src'] = $opt_placeholderSrc;
$attributes[$opt_src] = file_create_url($variables['path']);
$attributes['class'][] = $opt_selector;
foreach (array(
'width',
'height',
'alt',
'title',
) as $key) {
if (isset($variables[$key])) {
$attributes[$key] = $variables[$key];
}
}
return '<img' . drupal_attributes($attributes) . ' />';
}
}
/**
* Returns HTML for an image field formatter.
*
* @param $variables
* An associative array containing:
* - item: Associative array of image data, which may include "uri", "alt",
* "width", "height", "title" and "attributes".
* - image_style: An optional image style.
* - path: An array containing the link 'path' and link 'options'.
*
* @ingroup themeable
*/
function theme_lazy_image_formatter($variables) {
$item = $variables['item'];
$image = array(
'path' => $item['uri'],
);
if (array_key_exists('alt', $item)) {
$image['alt'] = $item['alt'];
}
if (isset($item['attributes'])) {
$image['attributes'] = $item['attributes'];
}
if (isset($item['width']) && isset($item['height'])) {
$image['width'] = $item['width'];
$image['height'] = $item['height'];
}
// Do not output an empty 'title' attribute.
if (isset($item['title']) && drupal_strlen($item['title']) > 0) {
$image['title'] = $item['title'];
}
if ($variables['image_style']) {
$image['style_name'] = $variables['image_style'];
}
$output = theme('lazy_image', $image);
// The link path and link options are both optional, but for the options to be
// processed, the link path must at least be an empty string.
if (isset($variables['path']['path'])) {
$path = $variables['path']['path'];
$options = isset($variables['path']['options']) ? $variables['path']['options'] : array();
// When displaying an image inside a link, the html option must be TRUE.
$options['html'] = TRUE;
$output = l($output, $path, $options);
}
return $output;
}

11
frontend/drupal/sites/all/themes/pro1ka/template.php
View File

@ -152,6 +152,17 @@ function pro1ka_preprocess_html(&$variables) {
drupal_add_js('https://www.google.com/recaptcha/api.js', array('group' => JS_THEME));
drupal_add_js('https://js.stripe.com/v3/', array('group' => JS_THEME));
//// First, we must set up an array
//$element = array(
// '#tag' => 'script', // The #tag is the html tag -
// '#attributes' => array( // Set up an array of attributes inside the tag
// 'href' => 'https://www.google.com/recaptcha/api.js',
// 'type' => 'text/javascript',
//
// ),
//);
//drupal_add_html_head($element, 'google_font_cardo');
}
/**