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Start with own undo/redo without depending on QTextEdit/QPlainTextEdit's undo/redo.

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This commit is contained in:
hjk
2009-01-06 11:45:56 +01:00
parent 8f4818989a
commit b46d8faf29
1 changed files with 101 additions and 15 deletions
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116
src/plugins/fakevim/handler.cpp
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@@ -102,6 +102,14 @@ enum SubSubMode
static const QString ConfigStartOfLine = "startofline";
static const QString ConfigOn = "on";
struct EditOperation
{
enum EditType { EditInsert, EditRemove } m_type;
int m_position;
int m_length;
QString m_data;
};
class FakeVimHandler::Private
{
public:
@@ -167,9 +175,6 @@ public:
QString m_mvcount;
QString m_opcount;
QStack<QString> m_undoStack;
QStack<QString> m_redoStack;
bool m_fakeEnd;
QWidget *editor();
@@ -185,6 +190,14 @@ public:
bool m_lastSearchForward;
QString m_lastInsertion;
// undo handling
void recordInsert(int position, const QString &data);
void recordRemove(int position, int length);
void undo();
void redo();
QStack<EditOperation> m_undoStack;
QStack<EditOperation> m_redoStack;
// extra data for '.'
QString m_dotCount;
QString m_dotCommand;
@@ -433,11 +446,11 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
} else if (key == 'a') {
m_mode = InsertMode;
m_lastInsertion.clear();
m_tc.beginEditBlock();
///m_tc.beginEditBlock();
m_tc.movePosition(Right, MoveAnchor, 1);
} else if (key == 'A') {
m_mode = InsertMode;
m_tc.beginEditBlock();
///m_tc.beginEditBlock();
m_tc.movePosition(EndOfLine, MoveAnchor);
m_lastInsertion.clear();
} else if (key == 'b') {
@@ -448,7 +461,7 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
finishMovement();
} else if (key == 'c') {
m_submode = ChangeSubMode;
m_tc.beginEditBlock();
///m_tc.beginEditBlock();
} else if (key == 'C') {
m_submode = ChangeSubMode;
//m_tc.beginEditBlock();
@@ -501,7 +514,7 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
finishMovement();
} else if (key == 'i') {
m_mode = InsertMode;
//m_tc.beginEditBlock();
///m_tc.beginEditBlock();
m_lastInsertion.clear();
} else if (key == 'I') {
m_mode = InsertMode;
@@ -510,13 +523,13 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
else
moveToFirstNonBlankOnLine();
m_tc.clearSelection();
//m_tc.beginEditBlock();
///m_tc.beginEditBlock();
m_lastInsertion.clear();
} else if (key == 'j' || key == Key_Down) {
m_tc.movePosition(Down, KeepAnchor, count());
finishMovement();
} else if (key == 'J') {
m_tc.beginEditBlock();
///m_tc.beginEditBlock();
if (m_submode == NoSubMode) {
for (int i = qMax(count(), 2) - 1; --i >= 0; ) {
m_tc.movePosition(EndOfLine);
@@ -527,7 +540,7 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
if (!m_gflag)
m_tc.movePosition(Left, MoveAnchor, 1);
}
m_tc.endEditBlock();
///m_tc.endEditBlock();
} else if (key == 'k' || key == Key_Up) {
m_tc.movePosition(Up, KeepAnchor, count());
finishMovement();
@@ -576,7 +589,7 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
m_tc.movePosition(Left);
}
} else if (key == control('r')) {
EDITOR(redo());
redo();
} else if (key == 's') {
m_submode = ChangeSubMode;
//m_tc.beginEditBlock();
@@ -585,7 +598,7 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
m_subsubmode = FtSubSubMode;
m_subsubdata = key;
} else if (key == 'u') {
EDITOR(undo());
undo();
} else if (key == 'V') {
enterVisualLineMode();
} else if (key == 'w') {
@@ -638,11 +651,17 @@ void FakeVimHandler::Private::handleCommandMode(int key, const QString &text)
void FakeVimHandler::Private::handleInsertMode(int key, const QString &text)
{
if (key == Key_Escape) {
for (int i = 1; i < count(); ++i)
// start with '1', as one instance was already physically inserted
// while typing
QString data = m_lastInsertion;
for (int i = 1; i < count(); ++i) {
m_tc.insertText(m_lastInsertion);
data += m_lastInsertion;
}
recordInsert(m_tc.position() - m_lastInsertion.size(), data);
m_tc.movePosition(Left, MoveAnchor, qMin(1, leftDist()));
m_mode = CommandMode;
m_tc.endEditBlock();
///m_tc.endEditBlock();
} else if (key == Key_Left) {
m_tc.movePosition(Left, MoveAnchor, 1);
m_lastInsertion.clear();
@@ -657,7 +676,7 @@ void FakeVimHandler::Private::handleInsertMode(int key, const QString &text)
m_lastInsertion.clear();
} else if (key == Key_Return) {
m_tc.insertBlock();
m_lastInsertion.clear();
m_lastInsertion += "\n";
} else if (key == Key_Backspace) {
m_tc.deletePreviousChar();
m_lastInsertion = m_lastInsertion.left(m_lastInsertion.size() - 1);
@@ -1109,6 +1128,73 @@ QWidget *FakeVimHandler::Private::editor()
: static_cast<QWidget *>(m_plaintextedit);
}
void FakeVimHandler::Private::undo()
{
#if 0
EDITOR(undo());
#else
if (m_undoStack.isEmpty())
return;
EditOperation op = m_undoStack.pop();
QTextCursor tc = m_tc;
tc.setPosition(op.m_position, MoveAnchor);
if (op.m_type == EditOperation::EditInsert) {
tc.setPosition(op.m_position + op.m_length, KeepAnchor);
tc.deleteChar();
} else {
tc.insertText(op.m_data);
}
m_redoStack.push(op);
#endif
}
void FakeVimHandler::Private::redo()
{
#if 0
EDITOR(redo());
#else
if (m_redoStack.isEmpty())
return;
EditOperation op = m_redoStack.pop();
QTextCursor tc = m_tc;
tc.setPosition(op.m_position, MoveAnchor);
if (op.m_type == EditOperation::EditInsert) {
tc.insertText(op.m_data);
} else {
tc.setPosition(op.m_position + op.m_length, KeepAnchor);
tc.deleteChar();
}
m_undoStack.push(op);
#endif
}
void FakeVimHandler::Private::recordInsert(int position, const QString &data)
{
qDebug() << "INSERT AT " << position << " DATA: " << data;
EditOperation op;
op.m_type = EditOperation::EditInsert;
op.m_position = position;
op.m_length = data.size();
op.m_data = data;
m_undoStack.push(op);
m_redoStack.clear();
}
void FakeVimHandler::Private::recordRemove(int position, int length)
{
qDebug() << "REMOVE AT " << position << " LEN: " << length;
QTextCursor tc = m_tc;
tc.setPosition(position, MoveAnchor);
tc.setPosition(position + length, KeepAnchor);
EditOperation op;
op.m_type = EditOperation::EditRemove;
op.m_position = position;
op.m_length = length;
op.m_data = tc.selection().toPlainText();
m_undoStack.push(op);
m_redoStack.clear();
}
///////////////////////////////////////////////////////////////////////
//
// FakeVimHandler