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processing/app/src/processing/app/syntax/PdeInputHandler.java at master · ishit/processing · GitHub
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syntax
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PdeInputHandler.java
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
PdeInputHandler - PDE-specific handling of keys
Part of the Processing project - http://processing.org
Copyright (c) 2012-14 The Processing Foundation
Copyright (c) 2004-12 Ben Fry and Casey Reas
Copyright (c) 2001-03 Massachusetts Institute of Technology
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package
processing
.
app
.
syntax
;
import
java
.
awt
.
event
.
InputEvent
;
import
java
.
awt
.
event
.
KeyEvent
;
import
processing
.
app
.
Platform
;
import
processing
.
app
.
Preferences
;
/**
* Sets key bindings used by the PDE, except for those that are Mode-specific.
* Not part of the original jeditsyntax DefaultInputHandler because it makes
* use of Preferences and other PDE classes.
*/
public
class
PdeInputHandler
extends
DefaultInputHandler
{
public
PdeInputHandler
() {
// Use option on mac for text edit controls that are ctrl on Windows/Linux.
// (i.e. ctrl-left/right is option-left/right on OS X)
String
mod
=
Platform
.
isMacOS
() ?
"A"
:
"C"
;
// right now, ctrl-up/down is select up/down, but mod should be
// used instead, because the mac expects it to be option(alt)
addKeyBinding
(
"BACK_SPACE"
,
InputHandler
.
BACKSPACE
);
// for 0122, shift-backspace is delete, for 0176, it's now a preference,
// to prevent holy warriors from attacking me for it.
if
(
Preferences
.
getBoolean
(
"editor.keys.shift_backspace_is_delete"
)) {
addKeyBinding
(
"S+BACK_SPACE"
,
InputHandler
.
DELETE
);
}
else
{
// Made the default for 0215, deemed better for our audience.
addKeyBinding
(
"S+BACK_SPACE"
,
InputHandler
.
BACKSPACE
);
}
addKeyBinding
(
"DELETE"
,
InputHandler
.
DELETE
);
addKeyBinding
(
"S+DELETE"
,
InputHandler
.
DELETE
);
// the following two were changed for 0122 for better mac/pc compatability
addKeyBinding
(
mod
+
"+BACK_SPACE"
,
InputHandler
.
BACKSPACE_WORD
);
// 0122
addKeyBinding
(
mod
+
"S+BACK_SPACE"
,
InputHandler
.
BACKSPACE_WORD
);
// 0215
addKeyBinding
(
mod
+
"+DELETE"
,
InputHandler
.
DELETE_WORD
);
// 0122
addKeyBinding
(
mod
+
"S+DELETE"
,
InputHandler
.
DELETE_WORD
);
// 0215
// handled by listener, don't bother here
//addKeyBinding("ENTER", InputHandler.INSERT_BREAK);
//addKeyBinding("TAB", InputHandler.INSERT_TAB);
addKeyBinding
(
"INSERT"
,
InputHandler
.
OVERWRITE
);
// http://dev.processing.org/bugs/show_bug.cgi?id=162
// added for 0176, though the bindings do not appear relevant for osx
if
(
Preferences
.
getBoolean
(
"editor.keys.alternative_cut_copy_paste"
)) {
addKeyBinding
(
"C+INSERT"
,
InputHandler
.
CLIPBOARD_COPY
);
addKeyBinding
(
"S+INSERT"
,
InputHandler
.
CLIPBOARD_PASTE
);
addKeyBinding
(
"S+DELETE"
,
InputHandler
.
CLIPBOARD_CUT
);
}
// disabling for 0122, not sure what this does
//addKeyBinding("C+\\", InputHandler.TOGGLE_RECT);
// for 0122, these have been changed for better compatibility
// HOME and END now mean the beginning/end of the document
// for 0176 changed this to a preference so that the Mac OS X people
// can get the "normal" behavior as well if they prefer.
if
(
Preferences
.
getBoolean
(
"editor.keys.home_and_end_travel_far"
)) {
addKeyBinding
(
"HOME"
,
InputHandler
.
DOCUMENT_HOME
);
addKeyBinding
(
"END"
,
InputHandler
.
DOCUMENT_END
);
addKeyBinding
(
"S+HOME"
,
InputHandler
.
SELECT_DOC_HOME
);
addKeyBinding
(
"S+END"
,
InputHandler
.
SELECT_DOC_END
);
}
else
{
// for 0123 added the proper windows defaults
addKeyBinding
(
"HOME"
,
InputHandler
.
HOME
);
addKeyBinding
(
"END"
,
InputHandler
.
END
);
addKeyBinding
(
"S+HOME"
,
InputHandler
.
SELECT_HOME
);
addKeyBinding
(
"S+END"
,
InputHandler
.
SELECT_END
);
addKeyBinding
(
"C+HOME"
,
InputHandler
.
DOCUMENT_HOME
);
addKeyBinding
(
"C+END"
,
InputHandler
.
DOCUMENT_END
);
addKeyBinding
(
"CS+HOME"
,
InputHandler
.
SELECT_DOC_HOME
);
addKeyBinding
(
"CS+END"
,
InputHandler
.
SELECT_DOC_END
);
}
if
(
Platform
.
isMacOS
()) {
// Additional OS X key bindings added for 0215.
// Also note that two more are added above and marked 0215.
// http://code.google.com/p/processing/issues/detail?id=1354
// Could not find a proper Apple guide, but a partial reference is here:
// http://guides.macrumors.com/Keyboard_shortcuts§ion=10#Text_Shortcuts
// control-A move to start of current paragraph
addKeyBinding
(
"C+A"
,
InputHandler
.
HOME
);
addKeyBinding
(
"CS+A"
,
InputHandler
.
SELECT_HOME
);
// control-E move to end of current paragraph
addKeyBinding
(
"C+E"
,
InputHandler
.
END
);
addKeyBinding
(
"CS+E"
,
InputHandler
.
SELECT_END
);
// control-D forward delete
addKeyBinding
(
"C+D"
,
InputHandler
.
DELETE
);
// control-B move left one character
addKeyBinding
(
"C+B"
,
InputHandler
.
PREV_CHAR
);
addKeyBinding
(
"CS+B"
,
InputHandler
.
SELECT_PREV_CHAR
);
// control-F move right one character
addKeyBinding
(
"C+F"
,
InputHandler
.
NEXT_CHAR
);
addKeyBinding
(
"CS+F"
,
InputHandler
.
SELECT_NEXT_CHAR
);
// control-H delete (just ASCII for backspace)
addKeyBinding
(
"C+H"
,
InputHandler
.
BACKSPACE
);
// control-N move down one line
addKeyBinding
(
"C+N"
,
InputHandler
.
NEXT_LINE
);
addKeyBinding
(
"CS+N"
,
InputHandler
.
SELECT_NEXT_LINE
);
// control-P move up one line
addKeyBinding
(
"C+P"
,
InputHandler
.
PREV_LINE
);
addKeyBinding
(
"CS+P"
,
InputHandler
.
SELECT_PREV_LINE
);
// might be nice, but no handlers currently available
// control-O insert new line after cursor
// control-T transpose (swap) two surrounding character
// control-V move to end, then left one character
// control-K delete remainder of current paragraph
// control-Y paste text previously deleted with control-K
}
if
(
Platform
.
isMacOS
()) {
addKeyBinding
(
"M+LEFT"
,
InputHandler
.
HOME
);
addKeyBinding
(
"M+RIGHT"
,
InputHandler
.
END
);
addKeyBinding
(
"MS+LEFT"
,
InputHandler
.
SELECT_HOME
);
// 0122
addKeyBinding
(
"MS+RIGHT"
,
InputHandler
.
SELECT_END
);
// 0122
}
else
{
addKeyBinding
(
"C+LEFT"
,
InputHandler
.
HOME
);
// 0122
addKeyBinding
(
"C+RIGHT"
,
InputHandler
.
END
);
// 0122
addKeyBinding
(
"CS+HOME"
,
InputHandler
.
SELECT_HOME
);
// 0122
addKeyBinding
(
"CS+END"
,
InputHandler
.
SELECT_END
);
// 0122
}
addKeyBinding
(
"PAGE_UP"
,
InputHandler
.
PREV_PAGE
);
addKeyBinding
(
"PAGE_DOWN"
,
InputHandler
.
NEXT_PAGE
);
addKeyBinding
(
"S+PAGE_UP"
,
InputHandler
.
SELECT_PREV_PAGE
);
addKeyBinding
(
"S+PAGE_DOWN"
,
InputHandler
.
SELECT_NEXT_PAGE
);
addKeyBinding
(
"LEFT"
,
InputHandler
.
PREV_CHAR
);
addKeyBinding
(
"S+LEFT"
,
InputHandler
.
SELECT_PREV_CHAR
);
addKeyBinding
(
mod
+
"+LEFT"
,
InputHandler
.
PREV_WORD
);
addKeyBinding
(
mod
+
"S+LEFT"
,
InputHandler
.
SELECT_PREV_WORD
);
addKeyBinding
(
"RIGHT"
,
InputHandler
.
NEXT_CHAR
);
addKeyBinding
(
"S+RIGHT"
,
InputHandler
.
SELECT_NEXT_CHAR
);
addKeyBinding
(
mod
+
"+RIGHT"
,
InputHandler
.
NEXT_WORD
);
addKeyBinding
(
mod
+
"S+RIGHT"
,
InputHandler
.
SELECT_NEXT_WORD
);
addKeyBinding
(
"UP"
,
InputHandler
.
PREV_LINE
);
addKeyBinding
(
mod
+
"+UP"
,
InputHandler
.
PREV_LINE
);
// p5
addKeyBinding
(
"S+UP"
,
InputHandler
.
SELECT_PREV_LINE
);
addKeyBinding
(
"DOWN"
,
InputHandler
.
NEXT_LINE
);
addKeyBinding
(
mod
+
"+DOWN"
,
InputHandler
.
NEXT_LINE
);
// p5
addKeyBinding
(
"S+DOWN"
,
InputHandler
.
SELECT_NEXT_LINE
);
addKeyBinding
(
"MS+UP"
,
InputHandler
.
SELECT_DOC_HOME
);
addKeyBinding
(
"CS+UP"
,
InputHandler
.
SELECT_DOC_HOME
);
addKeyBinding
(
"MS+DOWN"
,
InputHandler
.
SELECT_DOC_END
);
addKeyBinding
(
"CS+DOWN"
,
InputHandler
.
SELECT_DOC_END
);
addKeyBinding
(
mod
+
"+ENTER"
,
InputHandler
.
REPEAT
);
}
protected
boolean
isMnemonic
(
KeyEvent
event
) {
// Don't do this on OS X, because alt (the option key) is used for
// non-ASCII chars, and there are no menu mnemonics to speak of
if
(!
Platform
.
isMacOS
()) {
if
((
event
.
getModifiers
() &
InputEvent
.
ALT_MASK
) !=
0
&&
(
event
.
getModifiers
() &
InputEvent
.
CTRL_MASK
) ==
0
&&
event
.
getKeyChar
() !=
KeyEvent
.
VK_UNDEFINED
) {
// This is probably a menu mnemonic, don't pass it through.
// If it's an alt-NNNN sequence, those only work on the keypad
// and pass through UNDEFINED as the keyChar.
return
true
;
}
}
return
false
;
}
public
void
keyPressed
(
KeyEvent
event
) {
// don't pass the ctrl-, through to the editor
// https://github.com/processing/processing/issues/3074
if
((
event
.
getModifiers
() &
InputEvent
.
CTRL_MASK
) !=
0
&&
event
.
getKeyChar
() ==
','
) {
return
;
}
// don't pass menu mnemonics (alt-f for file, etc) to the editor
if
(
isMnemonic
(
event
)) {
return
;
}
if
(!
handlePressed
(
event
)) {
super
.
keyPressed
(
event
);
}
}
public
void
keyTyped
(
KeyEvent
event
) {
if
(
isMnemonic
(
event
)) {
return
;
}
if
(!
handleTyped
(
event
)) {
super
.
keyTyped
(
event
);
}
}
// we don't need keyReleased(), so that's passed through automatically
/**
* Override this function in your InputHandler to do any gymnastics.
* @return true if key has been handled (no further handling should be done)
*/
public
boolean
handlePressed
(
KeyEvent
event
) {
return
false
;
}
/**
* Override this instead of keyPressed/keyTyped
* @return true if key has been handled (no further handling should be done)
*/
public
boolean
handleTyped
(
KeyEvent
event
) {
return
false
;
}
}
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