| 1 | /* |
|---|---|
| 2 | SPDX-FileCopyrightText: 2013-2016 Simon St James <kdedevel@etotheipiplusone.com> |
| 3 | |
| 4 | SPDX-License-Identifier: LGPL-2.0-or-later |
| 5 | */ |
| 6 | |
| 7 | #ifndef KATEVI_EMULATED_COMMAND_BAR_COMPLETER_H |
| 8 | #define KATEVI_EMULATED_COMMAND_BAR_COMPLETER_H |
| 9 | |
| 10 | #include <functional> |
| 11 | |
| 12 | #include <QStringList> |
| 13 | |
| 14 | namespace KTextEditor |
| 15 | { |
| 16 | class ViewPrivate; |
| 17 | } |
| 18 | |
| 19 | class QLineEdit; |
| 20 | class QCompleter; |
| 21 | class QStringListModel; |
| 22 | class QKeyEvent; |
| 23 | |
| 24 | namespace KateVi |
| 25 | { |
| 26 | class ActiveMode; |
| 27 | class EmulatedCommandBar; |
| 28 | |
| 29 | struct CompletionStartParams { |
| 30 | static CompletionStartParams createModeSpecific(const QStringList &completions, |
| 31 | int wordStartPos, |
| 32 | std::function<QString(const QString &)> completionTransform = std::function<QString(const QString &)>()) |
| 33 | { |
| 34 | CompletionStartParams completionStartParams; |
| 35 | completionStartParams.completionType = ModeSpecific; |
| 36 | completionStartParams.completions = completions; |
| 37 | completionStartParams.wordStartPos = wordStartPos; |
| 38 | completionStartParams.completionTransform = completionTransform; |
| 39 | return completionStartParams; |
| 40 | } |
| 41 | static CompletionStartParams invalid() |
| 42 | { |
| 43 | CompletionStartParams completionStartParams; |
| 44 | completionStartParams.completionType = None; |
| 45 | return completionStartParams; |
| 46 | } |
| 47 | enum CompletionType { None, ModeSpecific, WordFromDocument }; |
| 48 | CompletionType completionType = None; |
| 49 | int wordStartPos = -1; |
| 50 | QStringList completions; |
| 51 | std::function<QString(const QString &)> completionTransform; |
| 52 | }; |
| 53 | |
| 54 | class Completer |
| 55 | { |
| 56 | public: |
| 57 | enum class CompletionInvocation { ExtraContext, NormalContext }; |
| 58 | Completer(EmulatedCommandBar *emulatedCommandBar, KTextEditor::ViewPrivate *view, QLineEdit *edit); |
| 59 | void startCompletion(const CompletionStartParams &completionStartParams); |
| 60 | void deactivateCompletion(); |
| 61 | bool isCompletionActive() const; |
| 62 | bool isNextTextChangeDueToCompletionChange() const; |
| 63 | bool completerHandledKeypress(const QKeyEvent *keyEvent); |
| 64 | void editTextChanged(const QString &newText); |
| 65 | void setCurrentMode(ActiveMode *currentMode); |
| 66 | |
| 67 | private: |
| 68 | QLineEdit *m_edit; |
| 69 | KTextEditor::ViewPrivate *m_view; |
| 70 | ActiveMode *m_currentMode = nullptr; |
| 71 | |
| 72 | void setCompletionIndex(int index); |
| 73 | void currentCompletionChanged(); |
| 74 | void updateCompletionPrefix(); |
| 75 | CompletionStartParams activateWordFromDocumentCompletion(); |
| 76 | QString wordBeforeCursor(); |
| 77 | int wordBeforeCursorBegin(); |
| 78 | void abortCompletionAndResetToPreCompletion(); |
| 79 | |
| 80 | QCompleter *m_completer; |
| 81 | QStringListModel *m_completionModel; |
| 82 | QString m_textToRevertToIfCompletionAborted; |
| 83 | int m_cursorPosToRevertToIfCompletionAborted = 0; |
| 84 | bool m_isNextTextChangeDueToCompletionChange = false; |
| 85 | CompletionStartParams m_currentCompletionStartParams; |
| 86 | CompletionStartParams::CompletionType m_currentCompletionType = CompletionStartParams::None; |
| 87 | }; |
| 88 | } |
| 89 | #endif |
| 90 |