iframe - Version 4.2

Version Description

  • 2015-08-16 =
  • minor bugfixing.
Download this release

Release Info

Developer webvitaly
Plugin Icon wp plugin iframe
Version 4.2
Comparing to
See all releases

Code changes from version 4.1 to 4.2

Files changed (4) hide show
  1. .gitattributes +17 -0
  2. .gitignore +43 -0
  3. iframe.php +72 -69
  4. readme.txt +149 -145
.gitattributes ADDED
@@ -0,0 +1,17 @@
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+ # Auto detect text files and perform LF normalization
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+ * text=auto
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+
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+ # Custom for Visual Studio
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+ *.cs diff=csharp
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+
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+ # Standard to msysgit
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+ *.doc diff=astextplain
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+ *.DOC diff=astextplain
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+ *.docx diff=astextplain
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+ *.DOCX diff=astextplain
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+ *.dot diff=astextplain
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+ *.DOT diff=astextplain
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+ *.pdf diff=astextplain
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+ *.PDF diff=astextplain
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+ *.rtf diff=astextplain
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+ *.RTF diff=astextplain
.gitignore ADDED
@@ -0,0 +1,43 @@
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+ # Windows image file caches
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+ Thumbs.db
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+ ehthumbs.db
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+
5
+ # Folder config file
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+ Desktop.ini
7
+
8
+ # Recycle Bin used on file shares
9
+ $RECYCLE.BIN/
10
+
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+ # Windows Installer files
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+ *.cab
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+ *.msi
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+ *.msm
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+ *.msp
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+
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+ # Windows shortcuts
18
+ *.lnk
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+
20
+ # =========================
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+ # Operating System Files
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+ # =========================
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+
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+ # OSX
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+ # =========================
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+
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+ .DS_Store
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+ .AppleDouble
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+ .LSOverride
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+
31
+ # Thumbnails
32
+ ._*
33
+
34
+ # Files that might appear on external disk
35
+ .Spotlight-V100
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+ .Trashes
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+
38
+ # Directories potentially created on remote AFP share
39
+ .AppleDB
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+ .AppleDesktop
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+ Network Trash Folder
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+ Temporary Items
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+ .apdisk
iframe.php CHANGED
@@ -1,69 +1,72 @@
1
- <?php
2
- /*
3
- Plugin Name: iframe
4
- Plugin URI: http://wordpress.org/plugins/iframe/
5
- Description: [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
6
- Version: 4.1
7
- Author: webvitaly
8
- Author URI: http://web-profile.com.ua/wordpress/plugins/
9
- License: GPLv3
10
- */
11
-
12
-
13
- function iframe_unqprfx_embed_shortcode( $atts ) {
14
- $defaults = array(
15
- 'src' => 'http://www.youtube.com/embed/4qsGTXLnmKs',
16
- 'width' => '100%',
17
- 'height' => '500',
18
- 'scrolling' => 'yes',
19
- 'class' => 'iframe-class',
20
- 'frameborder' => '0'
21
- );
22
-
23
- foreach ( $defaults as $default => $value ) { // add defaults
24
- if ( ! @array_key_exists( $default, $atts ) ) { // mute warning with "@" when no params at all
25
- $atts[$default] = $value;
26
- }
27
- }
28
-
29
- $html = "\n".'<!-- iframe plugin v.4.1 wordpress.org/plugins/iframe/ -->'."\n";
30
- $html .= '<iframe';
31
- foreach( $atts as $attr => $value ) {
32
- if ( strtolower($attr) != 'same_height_as' AND strtolower($attr) != 'onload'
33
- AND strtolower($attr) != 'onpageshow' AND strtolower($attr) != 'onclick') { // remove some attributes
34
- if ( $value != '' ) { // adding all attributes
35
- $html .= ' ' . esc_attr( $attr ) . '="' . esc_attr( $value ) . '"';
36
- } else { // adding empty attributes
37
- $html .= ' ' . esc_attr( $attr );
38
- }
39
- }
40
- }
41
- $html .= '></iframe>'."\n";
42
-
43
- if ( isset( $atts["same_height_as"] ) ) {
44
- $html .= '
45
- <script>
46
- document.addEventListener("DOMContentLoaded", function(){
47
- var target_element, iframe_element;
48
- iframe_element = document.querySelector("iframe.' . esc_attr( $atts["class"] ) . '");
49
- target_element = document.querySelector("' . esc_attr( $atts["same_height_as"] ) . '");
50
- iframe_element.style.height = target_element.offsetHeight + "px";
51
- });
52
- </script>
53
- ';
54
- }
55
-
56
- return $html;
57
- }
58
- add_shortcode( 'iframe', 'iframe_unqprfx_embed_shortcode' );
59
-
60
-
61
- function iframe_unqprfx_plugin_meta( $links, $file ) { // add 'Plugin page' and 'Donate' links to plugin meta row
62
- if ( strpos( $file, 'iframe.php' ) !== false ) {
63
- $links = array_merge( $links, array( '<a href="http://web-profile.com.ua/wordpress/plugins/iframe/" title="Plugin page">Iframe</a>' ) );
64
- $links = array_merge( $links, array( '<a href="http://web-profile.com.ua/donate/" title="Support the development">Donate</a>' ) );
65
- $links = array_merge( $links, array( '<a href="http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitaly">Advanced iFrame Pro</a>' ) );
66
- }
67
- return $links;
68
- }
69
- add_filter( 'plugin_row_meta', 'iframe_unqprfx_plugin_meta', 10, 2 );
1
+ <?php
2
+ /*
3
+ Plugin Name: iframe
4
+ Plugin URI: http://wordpress.org/plugins/iframe/
5
+ Description: [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
6
+ Version: 4.2
7
+ Author: webvitaly
8
+ Author URI: http://web-profile.com.ua/wordpress/plugins/
9
+ License: GPLv3
10
+ */
11
+
12
+
13
+ function iframe_unqprfx_embed_shortcode( $atts ) {
14
+ $defaults = array(
15
+ 'src' => 'http://www.youtube.com/embed/4qsGTXLnmKs',
16
+ 'width' => '100%',
17
+ 'height' => '500',
18
+ 'scrolling' => 'yes',
19
+ 'class' => 'iframe-class',
20
+ 'frameborder' => '0'
21
+ );
22
+
23
+ foreach ( $defaults as $default => $value ) { // add defaults
24
+ if ( ! @array_key_exists( $default, $atts ) ) { // mute warning with "@" when no params at all
25
+ $atts[$default] = $value;
26
+ }
27
+ }
28
+
29
+ $html = "\n".'<!-- iframe plugin v.4.2 wordpress.org/plugins/iframe/ -->'."\n";
30
+ $html .= '<iframe';
31
+ foreach( $atts as $attr => $value ) {
32
+ if ( strtolower($attr) != 'same_height_as' AND strtolower($attr) != 'onload'
33
+ AND strtolower($attr) != 'onpageshow' AND strtolower($attr) != 'onclick') { // remove some attributes
34
+ if ( $value != '' ) { // adding all attributes
35
+ $html .= ' ' . esc_attr( $attr ) . '="' . esc_attr( $value ) . '"';
36
+ } else { // adding empty attributes
37
+ $html .= ' ' . esc_attr( $attr );
38
+ }
39
+ }
40
+ }
41
+ $html .= '></iframe>'."\n";
42
+
43
+ if ( isset( $atts["same_height_as"] ) ) {
44
+ $html .= '
45
+ <script>
46
+ document.addEventListener("DOMContentLoaded", function(){
47
+ var target_element, iframe_element;
48
+ iframe_element = document.querySelector("iframe.' . esc_attr( $atts["class"] ) . '");
49
+ target_element = document.querySelector("' . esc_attr( $atts["same_height_as"] ) . '");
50
+ iframe_element.style.height = target_element.offsetHeight + "px";
51
+ });
52
+ </script>
53
+ ';
54
+ }
55
+
56
+ return $html;
57
+ }
58
+ add_shortcode( 'iframe', 'iframe_unqprfx_embed_shortcode' );
59
+
60
+
61
+ function iframe_unqprfx_plugin_meta( $links, $file ) { // add links to plugin meta row
62
+ if ( $file == plugin_basename( __FILE__ ) ) {
63
+ $row_meta = array(
64
+ 'support' => '<a href="http://web-profile.com.ua/wordpress/plugins/iframe/" target="_blank"><span class="dashicons dashicons-editor-help"></span> ' . __( 'Iframe', 'iframe' ) . '</a>',
65
+ 'donate' => '<a href="http://web-profile.com.ua/donate/" target="_blank"><span class="dashicons dashicons-heart"></span> ' . __( 'Donate', 'iframe' ) . '</a>',
66
+ 'pro' => '<a href="http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitalii" target="_blank"><span class="dashicons dashicons-star-filled"></span> ' . __( 'Advanced iFrame Pro', 'iframe' ) . '</a>'
67
+ );
68
+ $links = array_merge( $links, $row_meta );
69
+ }
70
+ return (array) $links;
71
+ }
72
+ add_filter( 'plugin_row_meta', 'iframe_unqprfx_plugin_meta', 10, 2 );
readme.txt CHANGED
@@ -1,145 +1,149 @@
1
- === iframe ===
2
- Contributors: webvitaly
3
- Donate link: http://web-profile.com.ua/donate/
4
- Tags: iframe, embed, youtube, vimeo, google-map, google-maps
5
- Requires at least: 3.0
6
- Tested up to: 4.4
7
- Stable tag: 4.1
8
- License: GPLv3
9
- License URI: http://www.gnu.org/licenses/gpl.html
10
-
11
- [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
12
-
13
- == Description ==
14
-
15
- > **[Advanced iFrame Pro](http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitaly)** |
16
- > **[iframe](http://web-profile.com.ua/wordpress/plugins/iframe/ "Plugin page")** |
17
- > **[All iframe params](http://wordpress.org/plugins/iframe/other_notes/)** |
18
- > **[Donate](http://web-profile.com.ua/donate/ "Support the development")**
19
-
20
- [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
21
- should show something like this:
22
-
23
- [youtube http://www.youtube.com/watch?v=4qsGTXLnmKs]
24
-
25
-
26
- WordPress removes iframe html tags because of security reasons.
27
- Iframe shortcode is the replacement of the iframe html tag and accepts the same [params as iframe](http://wordpress.org/plugins/iframe/other_notes/) html tag does.
28
- You may use iframe shortcode to embed content from YouTube, Vimeo, Google Maps or from any external page.
29
-
30
- If you need to embed content from YouTube, Vimeo, SlideShare, SoundCloud, Twitter via direct link, you may use `[embed]http://www.youtube.com/watch?v=4qsGTXLnmKs[/embed]` shortcode.
31
- [embed] shortcode is a core WordPress feature and can [embed content from many resources via direct link](http://codex.wordpress.org/Embeds).
32
-
33
- = Useful: =
34
- * [Advanced iFrame Pro](http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitaly)
35
- * ["Anti-spam" - block spam in comments](http://wordpress.org/plugins/anti-spam/ "no spam, no captcha")
36
- * ["Page-list" - show list of pages with shortcodes](http://wordpress.org/plugins/page-list/ "list of pages with shortcodes")
37
-
38
- == Other Notes ==
39
-
40
- = iframe params: =
41
- * **src** - source of the iframe: `[iframe src="http://www.youtube.com/embed/4qsGTXLnmKs"]`; by default src="http://www.youtube.com/embed/4qsGTXLnmKs";
42
- * **width** - width in pixels or in percents: `[iframe width="100%"]` or `[iframe width="600"]`; by default width="100%";
43
- * **height** - height in pixels: `[iframe height="500"]`; by default height="500";
44
- * **scrolling** - with or without the scrollbar: `[iframe scrolling="no"]`; by default scrolling="yes";
45
- * **frameborder** - with or without the frame border: `[iframe frameborder="0"]`; by default frameborder="0";
46
- * **marginheight** - height of the margin: `[iframe marginheight="0"]`; removed by default;
47
- * **marginwidth** - width of the margin: `[iframe marginwidth="0"]`; removed by default;
48
- * **allowtransparency** - allows to set transparency of the iframe: `[iframe allowtransparency="true"]`; removed by default;
49
- * **id** - allows to add the id of the iframe: `[iframe id="custom_id"]`; removed by default;
50
- * **class** - allows to add the class of the iframe: `[iframe class="custom_class"]`; by default class="iframe-class";
51
- * **style** - allows to add the css styles of the iframe: `[iframe style="margin-left:-30px;"]`; removed by default;
52
- * **same_height_as** - allows to set the height of iframe same as target element: `[iframe same_height_as="div.sidebar"]`, `[iframe same_height_as="div#content"]`, `[iframe same_height_as="body"]`, `[iframe same_height_as="html"]`; removed by default;
53
- * **any_other_param** - allows to add new parameter of the iframe `[iframe any_other_param="any_value"]`;
54
- * **any_other_empty_param** - allows to add new empty parameter of the iframe (like "allowfullscreen" on youtube) `[iframe any_other_empty_param=""]`;
55
-
56
- == Screenshots ==
57
-
58
- 1. [iframe] shortcode
59
-
60
- == Changelog ==
61
-
62
- = 4.1 - 2015-08-11 =
63
- * removed onpageshow and onclick params. Reason: XSS vulnerability (thanks to dxw.com).
64
-
65
- = 4.0 - 2015-08-09 =
66
- * removed get_params_from_url param. Reason: XSS vulnerability (thanks to dxw.com).
67
- If you still need this feature you can [download iframe ver 3.0[(https://wordpress.org/plugins/iframe/developers/) and stick to it but keep in mind of XSS vulnerability.
68
- * removed onload param. Reason: XSS vulnerability (thanks to dxw.com).
69
- * escaping attributes
70
-
71
- = 3.0 - 2015-01-25 =
72
- * removed same_height_as="content", same_height_as="window", same_height_as="document" features because it was not working properly
73
- * rewrote the javascript-code using pure JavaScript and without jQuery - no need to load jQuery for every site using iframe plugin
74
- * removed function_exists check because each function has unique prefix
75
- * code refactored
76
- * update docs
77
- * set height="500" instead of 480 by default
78
- * set scrolling="yes" instead of "no" by default
79
-
80
- = 2.9 - 2014-05-31 =
81
- * remove '&' from the end of the string in 'get_params_from_url' param
82
-
83
- = 2.8 - 2014-03-14 =
84
- * remove fix for google maps
85
-
86
- = 2.7 - 2013-06-09 =
87
- * minor changes
88
-
89
- = 2.6 - 2013-03-18 =
90
- * minor changes
91
-
92
- = 2.5 - 2012-11-03 =
93
- * added 'get_params_from_url' (thanks to Nathanael Majoros)
94
-
95
- = 2.4 - 2012-10-31 =
96
- * minor changes
97
-
98
- = 2.3 - 2012.09.09 =
99
- * small fixes
100
- * added (src="http://www.youtube.com/embed/4qsGTXLnmKs") by default
101
-
102
- = 2.2 =
103
- * fixed bug (Notice: Undefined index: same_height_as)
104
-
105
- = 2.1 =
106
- * added (frameborder="0") by default
107
-
108
- = 2.0 =
109
- * plugin core rebuild (thanks to Gregg Tavares)
110
- * remove not setted params except the defaults
111
- * added support for all params, which user will set
112
- * added support for empty params (like "allowfullscreen" on youtube)
113
-
114
- = 1.8 =
115
- * Added style parameter
116
-
117
- = 1.7 =
118
- * Fixing minor bugs
119
-
120
- = 1.6.0 =
121
- * Added auto-height feature (thanks to Willem Veelenturf)
122
-
123
- = 1.5.0 =
124
- * Using native jQuery from include directory
125
- * Improved "same_height_as" parameter
126
-
127
- = 1.4.0 =
128
- * Added "same_height_as" parameter
129
-
130
- = 1.3.0 =
131
- * Added "id" and "class" parameters
132
-
133
- = 1.2.0 =
134
- * Added "output=embed" fix to Google Map
135
-
136
- = 1.1.0 =
137
- * Parameter allowtransparency added (thanks to Kent)
138
-
139
- = 1.0.0 =
140
- * Initial release
141
-
142
- == Installation ==
143
-
144
- 1. install and activate the plugin on the Plugins page
145
- 2. add shortcode `[iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"]` to page or post content
1
+ === iframe ===
2
+ Contributors: webvitaly
3
+ Donate link: http://web-profile.com.ua/donate/
4
+ Tags: iframe, embed, youtube, vimeo, google-map, google-maps
5
+ Requires at least: 3.0
6
+ Tested up to: 4.7
7
+ Stable tag: 4.2
8
+ License: GPLv3
9
+ License URI: http://www.gnu.org/licenses/gpl.html
10
+
11
+ [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
12
+
13
+ == Description ==
14
+
15
+ > **[Advanced iFrame Pro](http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitalii "Advanced iFrame Pro")** |
16
+ > **[iframe](http://web-profile.com.ua/wordpress/plugins/iframe/ "Plugin page")** |
17
+ > **[All iframe params](http://wordpress.org/plugins/iframe/other_notes/)** |
18
+ > **[Donate](http://web-profile.com.ua/donate/ "Support the development")** |
19
+ > **[GitHub](https://github.com/webvitalii/iframe "Fork")**
20
+
21
+ [iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"] shortcode
22
+ should show something like this:
23
+
24
+ [youtube http://www.youtube.com/watch?v=4qsGTXLnmKs]
25
+
26
+
27
+ WordPress removes iframe html tags because of security reasons.
28
+ Iframe shortcode is the replacement of the iframe html tag and accepts the same [params as iframe](http://wordpress.org/plugins/iframe/other_notes/) html tag does.
29
+ You may use iframe shortcode to embed content from YouTube, Vimeo, Google Maps or from any external page.
30
+
31
+ If you need to embed content from YouTube, Vimeo, SlideShare, SoundCloud, Twitter via direct link, you may use `[embed]http://www.youtube.com/watch?v=4qsGTXLnmKs[/embed]` shortcode.
32
+ [embed] shortcode is a core WordPress feature and can [embed content from many resources via direct link](http://codex.wordpress.org/Embeds).
33
+
34
+ = Useful: =
35
+ * **[Advanced iFrame Pro](http://codecanyon.net/item/advanced-iframe-pro/5344999?ref=webvitalii "Advanced iFrame Pro")**
36
+ * **[Silver Bullet Pro - Speedup and protect WordPress in a smart way](http://codecanyon.net/item/silver-bullet-pro/15171769?ref=webvitalii "Speedup and protect WordPress in a smart way")**
37
+ * **[Anti-spam Pro - Block spam in comments](http://codecanyon.net/item/antispam-pro/6491169?ref=webvitalii "Block spam in comments")**
38
+
39
+ == Other Notes ==
40
+
41
+ = iframe params: =
42
+ * **src** - source of the iframe: `[iframe src="http://www.youtube.com/embed/4qsGTXLnmKs"]`; by default src="http://www.youtube.com/embed/4qsGTXLnmKs";
43
+ * **width** - width in pixels or in percents: `[iframe width="100%"]` or `[iframe width="600"]`; by default width="100%";
44
+ * **height** - height in pixels: `[iframe height="500"]`; by default height="500";
45
+ * **scrolling** - with or without the scrollbar: `[iframe scrolling="no"]`; by default scrolling="yes";
46
+ * **frameborder** - with or without the frame border: `[iframe frameborder="0"]`; by default frameborder="0";
47
+ * **marginheight** - height of the margin: `[iframe marginheight="0"]`; removed by default;
48
+ * **marginwidth** - width of the margin: `[iframe marginwidth="0"]`; removed by default;
49
+ * **allowtransparency** - allows to set transparency of the iframe: `[iframe allowtransparency="true"]`; removed by default;
50
+ * **id** - allows to add the id of the iframe: `[iframe id="custom_id"]`; removed by default;
51
+ * **class** - allows to add the class of the iframe: `[iframe class="custom_class"]`; by default class="iframe-class";
52
+ * **style** - allows to add the css styles of the iframe: `[iframe style="margin-left:-30px;"]`; removed by default;
53
+ * **same_height_as** - allows to set the height of iframe same as target element: `[iframe same_height_as="div.sidebar"]`, `[iframe same_height_as="div#content"]`, `[iframe same_height_as="body"]`, `[iframe same_height_as="html"]`; removed by default;
54
+ * **any_other_param** - allows to add new parameter of the iframe `[iframe any_other_param="any_value"]`;
55
+ * **any_other_empty_param** - allows to add new empty parameter of the iframe (like "allowfullscreen" on youtube) `[iframe any_other_empty_param=""]`;
56
+
57
+ == Screenshots ==
58
+
59
+ 1. [iframe] shortcode
60
+
61
+ == Changelog ==
62
+
63
+ = 4.2 - 2015-08-16 =
64
+ * minor bugfixing.
65
+
66
+ = 4.1 - 2015-08-11 =
67
+ * removed onpageshow and onclick params. Reason: XSS vulnerability (thanks to dxw.com).
68
+
69
+ = 4.0 - 2015-08-09 =
70
+ * removed get_params_from_url param. Reason: XSS vulnerability (thanks to dxw.com).
71
+ If you still need this feature you can [download iframe ver 3.0[(https://wordpress.org/plugins/iframe/developers/) and stick to it but keep in mind of XSS vulnerability.
72
+ * removed onload param. Reason: XSS vulnerability (thanks to dxw.com).
73
+ * escaping attributes
74
+
75
+ = 3.0 - 2015-01-25 =
76
+ * removed same_height_as="content", same_height_as="window", same_height_as="document" features because it was not working properly
77
+ * rewrote the javascript-code using pure JavaScript and without jQuery - no need to load jQuery for every site using iframe plugin
78
+ * removed function_exists check because each function has unique prefix
79
+ * code refactored
80
+ * update docs
81
+ * set height="500" instead of 480 by default
82
+ * set scrolling="yes" instead of "no" by default
83
+
84
+ = 2.9 - 2014-05-31 =
85
+ * remove '&' from the end of the string in 'get_params_from_url' param
86
+
87
+ = 2.8 - 2014-03-14 =
88
+ * remove fix for google maps
89
+
90
+ = 2.7 - 2013-06-09 =
91
+ * minor changes
92
+
93
+ = 2.6 - 2013-03-18 =
94
+ * minor changes
95
+
96
+ = 2.5 - 2012-11-03 =
97
+ * added 'get_params_from_url' (thanks to Nathanael Majoros)
98
+
99
+ = 2.4 - 2012-10-31 =
100
+ * minor changes
101
+
102
+ = 2.3 - 2012.09.09 =
103
+ * small fixes
104
+ * added (src="http://www.youtube.com/embed/4qsGTXLnmKs") by default
105
+
106
+ = 2.2 =
107
+ * fixed bug (Notice: Undefined index: same_height_as)
108
+
109
+ = 2.1 =
110
+ * added (frameborder="0") by default
111
+
112
+ = 2.0 =
113
+ * plugin core rebuild (thanks to Gregg Tavares)
114
+ * remove not setted params except the defaults
115
+ * added support for all params, which user will set
116
+ * added support for empty params (like "allowfullscreen" on youtube)
117
+
118
+ = 1.8 =
119
+ * Added style parameter
120
+
121
+ = 1.7 =
122
+ * Fixing minor bugs
123
+
124
+ = 1.6.0 =
125
+ * Added auto-height feature (thanks to Willem Veelenturf)
126
+
127
+ = 1.5.0 =
128
+ * Using native jQuery from include directory
129
+ * Improved "same_height_as" parameter
130
+
131
+ = 1.4.0 =
132
+ * Added "same_height_as" parameter
133
+
134
+ = 1.3.0 =
135
+ * Added "id" and "class" parameters
136
+
137
+ = 1.2.0 =
138
+ * Added "output=embed" fix to Google Map
139
+
140
+ = 1.1.0 =
141
+ * Parameter allowtransparency added (thanks to Kent)
142
+
143
+ = 1.0.0 =
144
+ * Initial release
145
+
146
+ == Installation ==
147
+
148
+ 1. install and activate the plugin on the Plugins page
149
+ 2. add shortcode `[iframe src="http://www.youtube.com/embed/4qsGTXLnmKs" width="100%" height="500"]` to page or post content