*/
public boolean scrollUp(boolean up)
{
+ /*
+ * if in unwrapped mode, scroll up or down one sequence row;
+ * if in wrapped mode, scroll by one visible width of columns
+ */
if (up)
{
- if (startSeq < 1)
+ if (wrappedMode)
{
- return false;
+ pageUp();
+ }
+ else
+ {
+ if (startSeq < 1)
+ {
+ return false;
+ }
+ setStartSeq(startSeq - 1);
}
-
- setStartSeq(startSeq - 1);
}
else
{
- if (endSeq >= getVisibleAlignmentHeight() - 1)
+ if (wrappedMode)
{
- return false;
+ pageDown();
+ }
+ else
+ {
+ if (endSeq >= getVisibleAlignmentHeight() - 1)
+ {
+ return false;
+ }
+ setStartSeq(startSeq + 1);
}
-
- setStartSeq(startSeq + 1);
}
return true;
}
}
}
}
-
+
/**
* Adjust sequence position for page up. Fires a property change event.
*/
getViewportHeight());
}
}
-
+
/**
* Adjust sequence position for page down. Fires a property change event.
*/