mirror of
https://github.com/SerenityOS/serenity
synced 2024-10-04 23:19:27 +00:00
112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2020, the SerenityOS developers.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <LibLine/Editor.h>
|
|
|
|
namespace {
|
|
constexpr u32 ctrl(char c) { return c & 0x3f; }
|
|
}
|
|
|
|
namespace Line {
|
|
|
|
void KeyCallbackMachine::register_key_input_callback(Vector<Key> keys, Function<bool(Editor&)> callback)
|
|
{
|
|
m_key_callbacks.set(keys, make<KeyCallback>(move(callback)));
|
|
}
|
|
|
|
void KeyCallbackMachine::key_pressed(Editor& editor, Key key)
|
|
{
|
|
#ifdef CALLBACK_MACHINE_DEBUG
|
|
dbgln("Key<{}, {}> pressed, seq_length={}, {} things in the matching vector", key.key, key.modifiers, m_sequence_length, m_current_matching_keys.size());
|
|
#endif
|
|
if (m_sequence_length == 0) {
|
|
ASSERT(m_current_matching_keys.is_empty());
|
|
|
|
for (auto& it : m_key_callbacks) {
|
|
if (it.key.first() == key)
|
|
m_current_matching_keys.append(it.key);
|
|
}
|
|
|
|
if (m_current_matching_keys.is_empty()) {
|
|
m_should_process_this_key = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
++m_sequence_length;
|
|
Vector<Vector<Key>> old_macthing_keys;
|
|
swap(m_current_matching_keys, old_macthing_keys);
|
|
|
|
for (auto& okey : old_macthing_keys) {
|
|
if (okey.size() < m_sequence_length)
|
|
continue;
|
|
|
|
if (okey[m_sequence_length - 1] == key)
|
|
m_current_matching_keys.append(okey);
|
|
}
|
|
|
|
if (m_current_matching_keys.is_empty()) {
|
|
// Insert any keys that were captured
|
|
if (!old_macthing_keys.is_empty()) {
|
|
auto& keys = old_macthing_keys.first();
|
|
for (size_t i = 0; i < m_sequence_length - 1; ++i)
|
|
editor.insert(keys[i].key);
|
|
}
|
|
m_sequence_length = 0;
|
|
m_should_process_this_key = true;
|
|
return;
|
|
}
|
|
|
|
#ifdef CALLBACK_MACHINE_DEBUG
|
|
dbgln("seq_length={}, matching vector:", m_sequence_length);
|
|
for (auto& key : m_current_matching_keys) {
|
|
for (auto& k : key)
|
|
dbgln(" {}, {}", k.key, k.modifiers);
|
|
dbgln("");
|
|
}
|
|
#endif
|
|
|
|
m_should_process_this_key = false;
|
|
for (auto& key : m_current_matching_keys) {
|
|
if (key.size() == m_sequence_length) {
|
|
m_should_process_this_key = m_key_callbacks.get(key).value()->callback(editor);
|
|
m_sequence_length = 0;
|
|
m_current_matching_keys.clear();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void KeyCallbackMachine::interrupted(Editor& editor)
|
|
{
|
|
m_sequence_length = 0;
|
|
m_current_matching_keys.clear();
|
|
if (auto callback = m_key_callbacks.get({ ctrl('C') }); callback.has_value())
|
|
m_should_process_this_key = callback.value()->callback(editor);
|
|
}
|
|
|
|
}
|