126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
// Package kb provides keyboard mappings for Chrome DOM Keys for use with input
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// events.
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package kb
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//go:generate go run gen.go -out keys.go -pkg kb
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import (
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"unicode"
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"github.com/knq/chromedp/cdp/input"
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)
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// Key contains information for generating a key press based off the unicode
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// value.
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//
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// Example data for the following runes:
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// '\r' '\n' | ',' '<' | 'a' 'A' | '\u0a07'
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// _____________________________________________________
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type Key struct {
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// Code is the key code:
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// "Enter" | "Comma" | "KeyA" | "MediaStop"
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Code string
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// Key is the key value:
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// "Enter" | "," "<" | "a" "A" | "MediaStop"
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Key string
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// Text is the text for printable keys:
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// "\r" "\r" | "," "<" | "a" "A" | ""
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Text string
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// Unmodified is the unmodified text for printable keys:
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// "\r" "\r" | "," "," | "a" "a" | ""
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Unmodified string
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// Native is the native scan code.
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// 0x13 0x13 | 0xbc 0xbc | 0x61 0x41 | 0x00ae
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Native int64
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// Windows is the windows scan code.
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// 0x13 0x13 | 0xbc 0xbc | 0x61 0x41 | 0xe024
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Windows int64
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// Shift indicates whether or not the Shift modifier should be sent.
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// false false | false true | false true | false
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Shift bool
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// Print indicates whether or not the character is a printable character
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// (ie, should a "char" event be generated).
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// true true | true true | true true | false
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Print bool
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}
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// EncodeUnidentified encodes a keyDown, char, and keyUp sequence for an unidentified rune.
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//
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// TODO: write unit tests for non-latin/ascii unicode characters.
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func EncodeUnidentified(r rune) []*input.DispatchKeyEventParams {
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// create
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keyDown := input.DispatchKeyEventParams{
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Key: "Unidentified",
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/*NativeVirtualKeyCode: int64(r), // not sure if should be specifying the key code or not ...
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WindowsVirtualKeyCode: int64(r),*/
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}
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keyUp := keyDown
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keyDown.Type, keyUp.Type = input.KeyDown, input.KeyUp
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// printable, so create char event
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if unicode.IsPrint(r) {
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keyChar := keyDown
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keyChar.Type = input.KeyChar
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keyChar.Text = string(r)
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keyChar.UnmodifiedText = string(r)
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return []*input.DispatchKeyEventParams{&keyDown, &keyChar, &keyUp}
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}
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return []*input.DispatchKeyEventParams{&keyDown, &keyUp}
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}
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// Encode encodes a keyDown, char, and keyUp sequence for the specified rune.
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func Encode(r rune) []*input.DispatchKeyEventParams {
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// force \n -> \r
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if r == '\n' {
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r = '\r'
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}
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// if not known key, encode as unidentified
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v, ok := Keys[r]
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if !ok {
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return EncodeUnidentified(r)
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}
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// create
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keyDown := input.DispatchKeyEventParams{
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Key: v.Key,
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Code: v.Code,
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NativeVirtualKeyCode: v.Native,
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WindowsVirtualKeyCode: v.Windows,
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}
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if v.Shift {
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keyDown.Modifiers |= input.ModifierShift
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}
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keyUp := keyDown
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keyDown.Type, keyUp.Type = input.KeyDown, input.KeyUp
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// printable, so create char event
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if v.Print {
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keyChar := keyDown
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keyChar.Type = input.KeyChar
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keyChar.Text = v.Text
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keyChar.UnmodifiedText = v.Unmodified
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// the virtual key code for char events for printable characters will
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// be different than the defined keycode when not shifted...
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//
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// specifically, it always sends the ascii value as the scan code,
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// which is available as the rune.
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keyChar.NativeVirtualKeyCode = int64(r)
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keyChar.WindowsVirtualKeyCode = int64(r)
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return []*input.DispatchKeyEventParams{&keyDown, &keyChar, &keyUp}
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}
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return []*input.DispatchKeyEventParams{&keyDown, &keyUp}
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}
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