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FAQ: Entry Field in Morphic
How can I generate an entry field in Morphic?
If you want to use TextMorph, two very useful methods are
- contentsWrapped: and #extent:.
The example below creates a fixed-width
entry field in a morphic world:
tm _ TextMorph new.
tm contentsWrapped: ''; extent: 100@20. "this is the important stuff"
(border _ AlignmentMorph newRow) "this just makes the TextMorph easier =to see"
position: 200@200;
borderWidth: 1;
borderColor: Color black;
hResizing: #shrinkWrap;
vResizing: #shrinkWrap;
addMorph: tm.
World addMorph: border.
Further decisions to make include:
1. Whether and how to limit the characters entered. You may want to
create a subclass of TextMorph that provides additional behavior that
many data-entry applications require (max characters, specific
characters, formatting, etc).
2. What do do if the number of characters entered exceeds the allotted
space. The TextMorph in the example above simply expands to add more
rows of characters. If this is not desirable, you may want to look
instead at PluggableTextMorph which adds a scrollbar.
BobArning