Merge pull request #24 from ananyasen/FileIO

undo/redo per document , codemirror 2.22 update

1 files changed, 44 insertions, 0 deletions

diff --git a/imports/codemirror/lib/util/match-highlighter.js b/imports/codemirror/lib/util/match-highlighter.js
new file mode 100644
index 00000000..b70cc4cf
--- /dev/null
+++ b/imports/codemirror/lib/util/match-highlighter.js
@@ -0,0 +1,44 @@
+// Define match-highlighter commands. Depends on searchcursor.js
+// Use by attaching the following function call to the onCursorActivity event:
+        //myCodeMirror.matchHighlight(minChars);
+// And including a special span.CodeMirror-matchhighlight css class (also optionally a separate one for .CodeMirror-focused -- see demo matchhighlighter.html)
+
+(function() {
+  var DEFAULT_MIN_CHARS = 2;
+  
+  function MatchHighlightState() {
+        this.marked = [];
+  }
+  function getMatchHighlightState(cm) {
+        return cm._matchHighlightState || (cm._matchHighlightState = new MatchHighlightState());
+  }
+  
+  function clearMarks(cm) {
+        var state = getMatchHighlightState(cm);
+        for (var i = 0; i < state.marked.length; ++i)
+                state.marked[i].clear();
+        state.marked = [];
+  }
+  
+  function markDocument(cm, className, minChars) {
+    clearMarks(cm);
+        minChars = (typeof minChars !== 'undefined' ? minChars : DEFAULT_MIN_CHARS);
+        if (cm.somethingSelected() && cm.getSelection().length >= minChars) {
+                var state = getMatchHighlightState(cm);
+                var query = cm.getSelection();
+                cm.operation(function() {
+                        if (cm.lineCount() < 2000) { // This is too expensive on big documents.
+                          for (var cursor = cm.getSearchCursor(query); cursor.findNext();) {
+                                //Only apply matchhighlight to the matches other than the one actually selected
+                                if (!(cursor.from().line === cm.getCursor(true).line && cursor.from().ch === cm.getCursor(true).ch))
+                                        state.marked.push(cm.markText(cursor.from(), cursor.to(), className));
+                          }
+                        }
+                  });
+        }
+  }
+
+  CodeMirror.defineExtension("matchHighlight", function(className, minChars) {
+    markDocument(this, className, minChars);
+  });
+})();