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Dogcows Code - chaz/openbox/blob - util/epist/keytree.cc
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
2 // keytree.cc for Epistrophy - a key handler for NETWM/EWMH window managers.
3 // Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
5 // Permission is hereby granted, free of charge, to any person obtaining a
6 // copy of this software and associated documentation files (the "Software"),
7 // to deal in the Software without restriction, including without limitation
8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 // and/or sell copies of the Software, and to permit persons to whom the
10 // Software is furnished to do so, subject to the following conditions:
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 // DEALINGS IN THE SOFTWARE.
24 # include "../../config.h"
25 #endif // HAVE_CONFIG_H
35 keytree::keytree(Display
*display
, epist
*ep
)
36 : _display(display
), _timeout_screen(NULL
), _timer(NULL
), _epist(ep
)
40 _head
->action
= NULL
; // head's action is always NULL
42 // for complete initialization, initialize() has to be called as well. We
43 // call initialize() when we are certain that the config object (which the
44 // timer uses) has been fully initialized. (see parser::parse())
53 void keytree::unloadBindings()
55 ChildList::iterator it
, end
= _head
->children
.end();
56 for (it
= _head
->children
.begin(); it
!= end
; ++it
)
59 _head
->children
.clear();
63 void keytree::clearTree(keynode
*node
)
68 ChildList::iterator it
, end
= node
->children
.end();
69 for (it
= node
->children
.begin(); it
!= end
; ++it
)
72 node
->children
.clear();
80 void keytree::grabDefaults(screen
*scr
)
82 grabChildren(_head
, scr
);
85 void keytree::ungrabDefaults(screen
*scr
)
87 ChildList::const_iterator it
, end
= _head
->children
.end();
88 for (it
= _head
->children
.begin(); it
!= end
; ++it
)
89 if ( (*it
)->action
&& (*it
)->action
->type() != Action::toggleGrabs
)
90 scr
->ungrabKey( (*it
)->action
->keycode(), (*it
)->action
->modifierMask() );
93 void keytree::grabChildren(keynode
*node
, screen
*scr
)
95 ChildList::const_iterator it
, end
= node
->children
.end();
96 for (it
= node
->children
.begin(); it
!= end
; ++it
)
98 scr
->grabKey( (*it
)->action
->keycode(), (*it
)->action
->modifierMask() );
101 void keytree::ungrabChildren(keynode
*node
, screen
*scr
)
103 ChildList::const_iterator head_it
, head_end
= _head
->children
.end();
104 ChildList::const_iterator it
, end
= node
->children
.end();
107 // when ungrabbing children, make sure that we don't ungrab any topmost keys
108 // (children of the head node) This would render those topmost keys useless.
109 // Topmost keys are _never_ ungrabbed, since they are only grabbed at startup
111 for (it
= node
->children
.begin(); it
!= end
; ++it
) {
112 if ( (*it
)->action
) {
113 for (head_it
= _head
->children
.begin(); head_it
!= head_end
; ++head_it
) {
114 if ( (*it
)->action
->modifierMask() == (*head_it
)->action
->modifierMask() &&
115 (*it
)->action
->keycode() == (*head_it
)->action
->keycode())
123 scr
->ungrabKey( (*it
)->action
->keycode(), (*it
)->action
->modifierMask());
130 const Action
* keytree::getAction(const XEvent
&e
, unsigned int state
,
135 // we're done with the children. ungrab them
136 if (_current
!= _head
)
137 ungrabChildren(_current
, scr
);
139 ChildList::const_iterator it
, end
= _current
->children
.end();
140 for (it
= _current
->children
.begin(); it
!= end
; ++it
) {
142 if (e
.xkey
.keycode
== act
->keycode() && state
== act
->modifierMask()) {
143 if (act
->type() == Action::cancelChain
) {
144 // user is cancelling the chain explicitly
146 return (const Action
*)NULL
;
148 else if ( isLeaf(*it
) ) {
149 // node is a leaf, so an action will be executed
150 if (_timer
->isTiming()) {
152 _timeout_screen
= NULL
;
159 // node is not a leaf, so we advance down the tree, and grab the
160 // children of the new current node. no action is executed
161 if (_timer
->isTiming())
164 _timeout_screen
= scr
;
167 grabChildren(_current
, scr
);
168 return (const Action
*)NULL
;
173 // action not found. back to the head
175 return (const Action
*)NULL
;
178 void keytree::addAction(Action::ActionType action
, unsigned int mask
,
179 string key
, string arg
)
181 keynode
*tmp
= new keynode
;
183 if (action
== Action::toggleGrabs
&& _current
!= _head
) {
184 // the toggleGrabs key can only be set up as a root key, since if
185 // it was a chain key, we'd have to not ungrab the whole chain up
186 // to that key. which kinda defeats the purpose of this function.
190 tmp
->action
= new Action(action
,
191 XKeysymToKeycode(_display
,
192 XStringToKeysym(key
.c_str())),
194 tmp
->parent
= _current
;
195 _current
->children
.push_back(tmp
);
198 void keytree::advanceOnNewNode()
200 keynode
*tmp
= new keynode
;
202 tmp
->parent
= _current
;
203 _current
->children
.push_back(tmp
);
207 void keytree::retract()
209 if (_current
!= _head
)
210 _current
= _current
->parent
;
213 void keytree::setCurrentNodeProps(Action::ActionType action
, unsigned int mask
,
214 string key
, string arg
)
216 if (_current
->action
)
217 delete _current
->action
;
219 _current
->action
= new Action(action
,
220 XKeysymToKeycode(_display
,
221 XStringToKeysym(key
.c_str())),
225 void keytree::initialize(void)
229 _epist
->getConfig()->getValue(Config::chainTimeout
, tval
);
230 _timer
= new BTimer(_epist
, this);
233 tval
= 3000; // set default timeout to 3 seconds
235 _timer
->setTimeout(tval
);
238 void keytree::timeout(void)
240 assert(_timeout_screen
!= NULL
);
242 if (_current
!= _head
) {
243 ungrabChildren(_current
, _timeout_screen
);
246 _timeout_screen
= NULL
;
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