diff options
Diffstat (limited to 'app/assets/javascripts/lib/utils/text_utility.js')
-rw-r--r-- | app/assets/javascripts/lib/utils/text_utility.js | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/app/assets/javascripts/lib/utils/text_utility.js b/app/assets/javascripts/lib/utils/text_utility.js new file mode 100644 index 00000000000..b6636de5767 --- /dev/null +++ b/app/assets/javascripts/lib/utils/text_utility.js @@ -0,0 +1,115 @@ +(function() { + (function(w) { + var base; + if (w.gl == null) { + w.gl = {}; + } + if ((base = w.gl).text == null) { + base.text = {}; + } + gl.text.randomString = function() { + return Math.random().toString(36).substring(7); + }; + gl.text.replaceRange = function(s, start, end, substitute) { + return s.substring(0, start) + substitute + s.substring(end); + }; + gl.text.selectedText = function(text, textarea) { + return text.substring(textarea.selectionStart, textarea.selectionEnd); + }; + gl.text.lineBefore = function(text, textarea) { + var split; + split = text.substring(0, textarea.selectionStart).trim().split('\n'); + return split[split.length - 1]; + }; + gl.text.lineAfter = function(text, textarea) { + return text.substring(textarea.selectionEnd).trim().split('\n')[0]; + }; + gl.text.blockTagText = function(text, textArea, blockTag, selected) { + var lineAfter, lineBefore; + lineBefore = this.lineBefore(text, textArea); + lineAfter = this.lineAfter(text, textArea); + if (lineBefore === blockTag && lineAfter === blockTag) { + if (blockTag != null) { + textArea.selectionStart = textArea.selectionStart - (blockTag.length + 1); + textArea.selectionEnd = textArea.selectionEnd + (blockTag.length + 1); + } + return selected; + } else { + return blockTag + "\n" + selected + "\n" + blockTag; + } + }; + gl.text.insertText = function(textArea, text, tag, blockTag, selected, wrap) { + var insertText, inserted, selectedSplit, startChar; + selectedSplit = selected.split('\n'); + startChar = !wrap && textArea.selectionStart > 0 ? '\n' : ''; + if (selectedSplit.length > 1 && (!wrap || (blockTag != null))) { + if (blockTag != null) { + insertText = this.blockTagText(text, textArea, blockTag, selected); + } else { + insertText = selectedSplit.map(function(val) { + if (val.indexOf(tag) === 0) { + return "" + (val.replace(tag, '')); + } else { + return "" + tag + val; + } + }).join('\n'); + } + } else { + insertText = "" + startChar + tag + selected + (wrap ? tag : ' '); + } + if (document.queryCommandSupported('insertText')) { + inserted = document.execCommand('insertText', false, insertText); + } + if (!inserted) { + try { + document.execCommand("ms-beginUndoUnit"); + } catch (undefined) {} + textArea.value = this.replaceRange(text, textArea.selectionStart, textArea.selectionEnd, insertText); + try { + document.execCommand("ms-endUndoUnit"); + } catch (undefined) {} + } + return this.moveCursor(textArea, tag, wrap); + }; + gl.text.moveCursor = function(textArea, tag, wrapped) { + var pos; + if (!textArea.setSelectionRange) { + return; + } + if (textArea.selectionStart === textArea.selectionEnd) { + if (wrapped) { + pos = textArea.selectionStart - tag.length; + } else { + pos = textArea.selectionStart; + } + return textArea.setSelectionRange(pos, pos); + } + }; + gl.text.updateText = function(textArea, tag, blockTag, wrap) { + var $textArea, oldVal, selected, text; + $textArea = $(textArea); + oldVal = $textArea.val(); + textArea = $textArea.get(0); + text = $textArea.val(); + selected = this.selectedText(text, textArea); + $textArea.focus(); + return this.insertText(textArea, text, tag, blockTag, selected, wrap); + }; + gl.text.init = function(form) { + var self; + self = this; + return $('.js-md', form).off('click').on('click', function() { + var $this; + $this = $(this); + return self.updateText($this.closest('.md-area').find('textarea'), $this.data('md-tag'), $this.data('md-block'), !$this.data('md-prepend')); + }); + }; + gl.text.removeListeners = function(form) { + return $('.js-md', form).off(); + }; + return gl.text.truncate = function(string, maxLength) { + return string.substr(0, (maxLength - 3)) + '...'; + }; + })(window); + +}).call(this); |