+ // drag to left\r
+ else\r
+ {\r
+ /// Are we able to delete?\r
+ // ie are all columns blank?\r
+ boolean deleteAllowed = false;\r
+\r
+ for (int s = 0; s < sg.getSize(); s++)\r
+ {\r
+ SequenceI seq = sg.getSequenceAt(s);\r
+\r
+ for (int j = res; j < lastres; j++)\r
+ {\r
+ if (seq.getSequence().length() <= j)\r
+ {\r
+ continue;\r
+ }\r
+\r
+ if (!jalview.util.Comparison.isGap(\r
+ seq.getSequence().charAt(j)))\r
+ {\r
+ // Not a gap, block edit not valid\r
+ res = j + 1;\r
+ deleteAllowed = false;\r
+\r
+ continue;\r
+ }\r
+\r
+ deleteAllowed = true;\r
+ }\r
+ }\r
+\r
+ if (!deleteAllowed)\r
+ {\r
+ lastres = -1;\r
+\r
+ return;\r
+ }\r
+\r
+ sg.setEndRes(sg.getEndRes() - (lastres - res));\r
+ }\r
+\r
+ for (int i = 0; i < sg.getSize(); i++)\r
+ {\r
+ SequenceI s = sg.getSequenceAt(i);\r
+ int k = av.alignment.findIndex(s);\r
+\r
+ // drag to right\r
+ if (dragRight)\r
+ {\r
+ for (int j = lastres; j < res; j++)\r
+ {\r
+ insertChar(j, k);\r
+ }\r
+ }\r
+\r
+ // drag to left\r
+ else\r
+ {\r
+ for (int j = res; j < lastres; j++)\r
+ {\r
+ if (s.getLength() > j)\r
+ {\r
+ deleteChar(res, k);\r
+ }\r
+ }\r
+ }\r
+ }\r
+ }\r
+ else /////Editing a single sequence///////////\r
+ {\r
+ if ((res < av.getAlignment().getWidth()) && (res > lastres))\r
+ {\r
+ // dragging to the right\r
+ for (int j = lastres; j < res; j++)\r
+ {\r
+ insertChar(j, startseq);\r
+ }\r
+ }\r
+ else if ((res < av.getAlignment().getWidth()) &&\r
+ (res < lastres))\r
+ {\r
+ // dragging to the left\r
+ for (int j = lastres; j > res; j--)\r
+ {\r
+ if (jalview.util.Comparison.isGap(\r
+ av.alignment.getSequenceAt(startseq)\r
+ .getSequence().charAt(res)))\r
+ {\r
+ deleteChar(res, startseq);\r
+ }\r
+ else\r
+ {\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ }\r
+ }\r