1 files changed, 105 insertions, 0 deletions
diff --git a/gstudio/static/gstudio/js/Gnowmacs/src/js/ymacs-marker.js b/gstudio/static/gstudio/js/Gnowmacs/src/js/ymacs-marker.js
new file mode 100644
index 00000000..ca9c1c0e
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+++ b/gstudio/static/gstudio/js/Gnowmacs/src/js/ymacs-marker.js
@@ -0,0 +1,105 @@
+//> This file is part of Ymacs, an Emacs-like editor for the Web
+//> http://www.ymacs.org/
+//>
+//> Copyright (c) 2009-2010, Mihai Bazon, Dynarch.com.  All rights reserved.
+//>
+//> Redistribution and use in source and binary forms, with or without
+//> modification, are permitted provided that the following conditions are
+//> met:
+//>
+//>     * Redistributions of source code must retain the above copyright
+//>       notice, this list of conditions and the following disclaimer.
+//>
+//>     * Redistributions in binary form must reproduce the above copyright
+//>       notice, this list of conditions and the following disclaimer in
+//>       the documentation and/or other materials provided with the
+//>       distribution.
+//>
+//>     * Neither the name of Dynarch.com nor the names of its contributors
+//>       may be used to endorse or promote products derived from this
+//>       software without specific prior written permission.
+//>
+//> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+//> EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+//> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+//> PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE
+//> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+//> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+//> SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+//> INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+//> CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+//> ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+//> THE POSSIBILITY OF SUCH DAMAGE.
+
+// @require ymacs-buffer.js
+
+/* -----[ markers are objects that hold a position which is
+   automatically maintained as text is inserted or
+   removed ]----- */
+
+DEFINE_CLASS("Ymacs_Marker", null, function(D, P){
+
+        D.DEFAULT_ARGS = {
+                position : [ "pos"    , null ],
+                editor   : [ "editor" , null ],
+                before   : [ "before" , false ],
+                name     : [ "name"   , null ]
+        };
+
+        D.CONSTRUCT = function() {
+                this.editor.markers.push(this);
+                this.rowcol = null;
+                this.onChange = [];
+        };
+
+        P.destroy = function() {
+                this.editor.markers.remove(this);
+                this.editor = null;
+        };
+
+        P.editorChange = function(pos, diff, min) {
+                var p = this.position;
+                if (this.before)
+                        --p;
+                if (diff != 0 && pos <= p) {
+                        this.rowcol = null;
+                        this.position += diff;
+                        if (this.position < min)
+                                this.position = min;
+                        this.callHooks(this.onChange, this.position);
+                }
+        };
+
+        P.callHooks = function(a, arg) {
+                for (var i = a.length; --i >= 0;)
+                        a[i].call(this.editor, arg);
+        };
+
+        P.getPosition = function() {
+                return this.position;
+        };
+
+        P.setPosition = function(pos, noHooks, force) {
+                if (force || this.position != pos) {
+                        this.rowcol = null;
+                        this.position = pos;
+                        if (!noHooks)
+                                this.callHooks(this.onChange, this.position);
+                }
+        };
+
+        P.getRowCol = function() {
+                return this.rowcol || (this.rowcol = this.editor._positionToRowCol(this.position));
+        };
+
+        P.updateMarkers = function(delta) {
+                this.editor._updateMarkers(this.getPosition(), delta);
+        };
+
+        P.swap = function(other, noHooks, force) {
+                var tmp = this.getPosition();
+                this.setPosition(other.getPosition(), noHooks, force);
+                other.setPosition(tmp, noHooks, force);
+        };
+
+});