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| author | Nathaniel Guse <nathaniel.guse@gmail.com> | 2013-06-06 14:07:27 -0500 |
|---|---|---|
| committer | Nathaniel Guse <nathaniel.guse@gmail.com> | 2013-06-06 14:07:27 -0500 |
| commit | 8c3bb26a62ade208d5035015299c2126b15854cb (patch) | |
| tree | 6e8b789cfad8bd87e86b1df5df4c6aacfc4e6eb7 /phpBB/assets/javascript/core.js | |
| parent | 4a4a822df888231d2fbea7bf9555604b93f3dc95 (diff) | |
| parent | 9db0fa88569da1922ac21d9a003b7e577a96c810 (diff) | |
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Merge remote-tracking branch 'remotes/cyberalien/feature/editor-code-tabs' into develop
# By Vjacheslav Trushkin
# Via Vjacheslav Trushkin
* remotes/cyberalien/feature/editor-code-tabs:
[feature/editor-code-tabs] Make inTag function reusable
[feature/editor-code-tabs] Check for browser support in function
[feature/editor-code-tabs] Apply code editor to everything
[feature/editor-code-tabs] Correctly count indentation on first line
Diffstat (limited to 'phpBB/assets/javascript/core.js')
| -rw-r--r-- | phpBB/assets/javascript/core.js | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/phpBB/assets/javascript/core.js b/phpBB/assets/javascript/core.js index e0f1dc1eef..cdba6f9d26 100644 --- a/phpBB/assets/javascript/core.js +++ b/phpBB/assets/javascript/core.js @@ -678,5 +678,164 @@ phpbb.resizeTextArea = function(items, options) { }); }; +/** +* Check if cursor in textarea is currently inside a bbcode tag +* +* @param {object} textarea Textarea DOM object +* @param {Array} startTags List of start tags to look for +* For example, Array('[code]', '[code=') +* @param {Array} endTags List of end tags to look for +* For example, Array('[/code]') +* +* @return {boolean} True if cursor is in bbcode tag +*/ +phpbb.inBBCodeTag = function(textarea, startTags, endTags) { + var start = textarea.selectionStart, + lastEnd = -1, + lastStart = -1, + i, index, value; + + if (typeof start !== 'number') { + return false; + } + + value = textarea.value.toLowerCase(); + + for (i = 0; i < startTags.length; i++) { + var tagLength = startTags[i].length; + if (start >= tagLength) { + index = value.lastIndexOf(startTags[i], start - tagLength); + lastStart = Math.max(lastStart, index); + } + } + if (lastStart == -1) return false; + + if (start > 0) { + for (i = 0; i < endTags.length; i++) { + index = value.lastIndexOf(endTags[i], start - 1); + lastEnd = Math.max(lastEnd, index); + } + } + + return (lastEnd < lastStart); +} + + +/** +* Adjust textarea to manage code bbcode +* +* This function allows to use tab characters when typing code +* and keeps indentation of previous line of code when adding new +* line while typing code. +* +* Editor's functionality is changed only when cursor is between +* [code] and [/code] bbcode tags. +* +* @param {object} textarea Textarea DOM object to apply editor to +*/ +phpbb.applyCodeEditor = function(textarea) { + // list of allowed start and end bbcode code tags, in lower case + var startTags = ['[code]', '[code='], + startTagsEnd = ']', + endTags = ['[/code]']; + + if (!textarea || typeof textarea.selectionStart !== 'number') { + return; + } + + if ($(textarea).data('code-editor') === true) { + return; + } + + function inTag() { + return phpbb.inBBCodeTag(textarea, startTags, endTags); + } + + /** + * Get line of text before cursor + * + * @param {boolean} stripCodeStart If true, only part of line + * after [code] tag will be returned. + * + * @return {string} Line of text + */ + function getLastLine(stripCodeStart) { + var start = textarea.selectionStart, + value = textarea.value, + index = value.lastIndexOf("\n", start - 1); + + value = value.substring(index + 1, start); + + if (stripCodeStart) { + for (var i = 0; i < startTags.length; i++) { + index = value.lastIndexOf(startTags[i]); + if (index >= 0) { + var tagLength = startTags[i].length; + + value = value.substring(index + tagLength); + if (startTags[i].lastIndexOf(startTagsEnd) != tagLength) { + index = value.indexOf(startTagsEnd); + + if (index >= 0) { + value = value.substr(index + 1); + } + } + } + } + } + + return value; + } + + /** + * Append text at cursor position + * + * @param {string} Text Text to append + */ + function appendText(text) { + var start = textarea.selectionStart, + end = textarea.selectionEnd, + value = textarea.value; + + textarea.value = value.substr(0, start) + text + value.substr(end); + textarea.selectionStart = textarea.selectionEnd = start + text.length; + } + + $(textarea).data('code-editor', true).on('keydown', function(event) { + var key = event.keyCode || event.which; + + // intercept tabs + if (key == 9) { + if (inTag()) { + appendText("\t"); + event.preventDefault(); + return; + } + } + + // intercept new line characters + if (key == 13) { + if (inTag()) { + var lastLine = getLastLine(true), + code = '' + /^\s*/g.exec(lastLine); + + if (code.length > 0) { + appendText("\n" + code); + event.preventDefault(); + return; + } + } + } + }); +}; + +/** +* Apply code editor to all textarea elements with data-bbcode attribute +*/ +$(document).ready(function() { + $('textarea[data-bbcode]').each(function() { + phpbb.applyCodeEditor(this); + }); +}); })(jQuery); // Avoid conflicts with other libraries |