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TiddlyWiki5/editions/tw5.com/tiddlers/widgets/KeyboardWidget.tid
Jermolene 3c20f2396e Add support for assigning action widgets via the actions attribute
This is quite a big change: a new way to invoke action widgets.

The advantage is that it solves #2217 and #1564, a long running problem
that prevented us from adding action widgets to widgets that modify the
store.

This commit adds the new technique for the button and keyboard widgets,
but also extends the select widget to trigger action widgets for the
first time
2016-04-29 18:54:44 +01:00

36 lines
1.4 KiB
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caption: keyboard
created: 20140302192136805
modified: 20160429175258940
tags: Widgets
title: KeyboardWidget
type: text/vnd.tiddlywiki
! Introduction
The keyboard widget allows ActionWidgets to be triggered by specific key combinations. There is also a shorthand for generating [[Messages]] via the `message` and `param` attributes.
! Content and Attributes
The content of the `<$keyboard>` widget is rendered normally. The keyboard shortcuts only take effect when the focus is within the contained content.
|!Attribute |!Description |
|actions |A string containing ActionWidgets to be triggered when the key combination is detected |
|message |The title of the [[WidgetMessage|Messages]] to generate |
|param |The parameter to be passed with the [[WidgetMessage|Messages]] |
|key |Key string identifying the key(s) to be trapped (see below) |
|class |A CSS class to be assigned to the generated HTML DIV element |
! Key Strings
Key strings are made up of one or more key specifiers separated by spaces. Each key specifier is zero or more of the modifiers <kbd>alt</kbd>, <kbd>shift</kbd>, <kbd>ctrl</kbd> or <kbd>meta</kbd> followed by the name of a key, all joined with "+" plus or "-" minus symbols. Key names are either the letter or digit printed on the key (eg "a" or "1"), or one of the special keys <kbd>backspace</kbd>, <kbd>tab</kbd>, <kbd>enter</kbd> or <kbd>escape</kbd>.
For example:
```
A
shift+A
shift+escape
ctrl+enter
ctrl+shift+alt+A
```