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35 lines
1.3 KiB
Plaintext
35 lines
1.3 KiB
Plaintext
caption: keyboard
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created: 20140302192136805
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modified: 20160418151713895
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tags: Widgets
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title: KeyboardWidget
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type: text/vnd.tiddlywiki
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! Introduction
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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.
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! Content and Attributes
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The content of the `<$keyboard>` widget is rendered normally. The keyboard shortcuts only take effect when the focus is within the contained content.
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|!Attribute |!Description |
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|message |The title of the [[WidgetMessage|Messages]] to generate |
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|param |The parameter to be passed with the [[WidgetMessage|Messages]] |
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|key |Key string identifying the key(s) to be trapped (see below) |
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|class |A CSS class to be assigned to the generated HTML DIV element |
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! Key Strings
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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>.
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For example:
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```
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A
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shift+A
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shift+escape
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ctrl+enter
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ctrl+shift+alt+A
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```
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