jgrasp handbook

Clear All Marks - removes all marks.
18.9 Open File Dialog
A dialog for opening files.
DRAFT, February 18, 2003, Page 96
Filters for the languages supported by jGRASP are provided, as well as the "all files" filter. Note that
language filters classify files based on the extension only if they have not been opened in jGRASP before.
Once a file is opened, jGRASP remembers that language. The default language for files with a ".h"
extension can be set to C++ or C only (not both) by changing the extension settings for C or C++ (see
settings).
You can also type a list of extensions into the "Filter Extensions" field to filter by extensions. These must
be separated by whitespace, and can start with ".", "*.", or nothing. For example: "*.c *.cpp", ".c .cpp", and
"c cpp" will all show only files that end in ".c" or ".cpp".
The Text / Binary radio buttons allow the file to be opened in text mode (UNIX, DOS, and Mac. line
terminators accepted) or binary mode (only newlines are line terminators).
18.10 Mouse Button Actions
Left Mouse Button
Shift Key Down - same as middle mouse button.
Ctrl Key Down - same as right mouse button with CSD Window popup disabled.
Single Click - positions cursor. If at left of window, selects a line.
Double Click - if on text, selects a whitespace delimited word or whitespace. If on CSD, folds the
CSD structure recursively. If on a folded CSD line, unfolds that line.
Triple Click - selects a line.
Quadruple Click - selects the whole text.
Middle Mouse Button - Extends the current selection.
Right Mouse Button - if CSD Window popup is enabled, brings up the popup menu, otherwise:
Single Click - selects a single language-specific token or whitespace block.
More Clicks - selects layers of matching parenthesis and braces.
18.11 Folding
The jGRASP CSD window allows text folding based on CSD structure and arbitrary folding. This folding is
line-based: two or more lines are folded into one. For CSD structures, the first line remains unfolded. The
second line (first folded line) displays the CSD folding symbol (a box with a plus inside) and if the second
line contained only a comment, that comment. The fold commands are available on the View / Fold menu,
through accelerator keys, and through mouse actions on the CSD. If the menu or accelerator key is used,
folding is applied to the current text cursor position. For mouse clicking, it is applied to the position clicked
on.
When text is edited after a CSD is generated, the foldable structure is maintained as much as possible.
An edited CSD may fold in unexpected ways - regenerating the CSD will fix this.
The CSD structure containing the cursor is considered to be the innermost structure if the cursor is in the
text, or the nearest CSD stem if the cursor is in the CSD. Note that each statement and declaration is a