1 files changed, 112 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..130479642f3
--- /dev/null
+++ b/app/assets/javascripts/lib/utils/text_utility.js
@@ -0,0 +1,112 @@
+(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'));
+      });
+    };
+    return gl.text.removeListeners = function(form) {
+      return $('.js-md', form).off();
+    };
+  })(window);
+
+}).call(this);