Code folding works in conjunction with the Hide/Show Lines feature of previous versions.
There are two configuration options under the Code Folding branch under Settings in the Advanced tab that determine whether or not code folding and hiding/showing lines is supported in UltraEdit: Enable show/hide lines and code folding and Enable show/hide lines for non syntax highlighted files.
Enable show/hide lines and code folding
If this option is selected under Configuration then the Hide/show selection command may be invoked via the View tab option. Selection of this configuration option also enables code folding and a small gutter will be visible between the line numbers and the edit window where the symbols used for code folding ("+" and "-") will be displayed. By default code folding will operate on any strings (whether characters - "{, }" - or words - "if, endif") defined in the active wordfile as /Open Fold Strings or /Close Fold Strings. Please see Syntax Highlighting for further information on fold strings.
If a "+" or "-" is displayed in the folding gutter the folding state of the referenced code may be toggled by left-clicking on the folding symbol in the folding gutter. For example, in the following code:
clicking on the "+" would expand the collapsed code. Clicking on the "-" below:
would collapse the expanded code.
There are two code folding options that may be selected from the View tab: Expand All and Collapse All.
Expand All
When this command is invoked from the View tab, all blocks in the active file bounded by Indent/Unindent Strings defined in the active wordfile would be expanded. If text is selected this will affect only the selected region. If no text is selected this command will operate on the whole of the active file.
Please note: When this command is invoked, strings hidden using the Hide Lines command will be expanded as well as folded sections of code.
Collapse All
When this command is invoked from the View tab, all blocks in the active file bounded by the Indent/Unindent Strings defined in the active wordfile would be collapsed. If text is selected this will affect only the selected region. If no text is selected this command will operate on the whole of the active file.
If the CTRL key is held while clicking on a folding control, all child nodes of that node will be folded/unfolded.
If the ALT key is held while clicking on a folding control, all nodes in the active file will be folded/unfolded.
Enable show/hide lines for non syntax highlighted files
If this option is selected under Configuration then the Hide/show selection command may be invoked via the View tab option even on files that have no syntax highlighting (e.g. on standard text files). The advantage here is that lines that have been hidden using the Hide/show selection command will be indicated by the "+" in the folding gutter. If this option is not selected under Configuration, text may not be hidden in non-highlighted files and the folding gutter will not be displayed.