1// Scintilla source code edit control
2/** @file EditModel.cxx
3 ** Defines the editor state that must be visible to EditorView.
4 **/
5// Copyright 1998-2014 by Neil Hodgson <neilh@scintilla.org>
6// The License.txt file describes the conditions under which this software may be distributed.
7
8#include <cstddef>
9#include <cstdlib>
10#include <cstdint>
11#include <cassert>
12#include <cstring>
13#include <cmath>
14
15#include <stdexcept>
16#include <string>
17#include <string_view>
18#include <vector>
19#include <map>
20#include <set>
21#include <optional>
22#include <algorithm>
23#include <memory>
24
25#include "ScintillaTypes.h"
26#include "ILoader.h"
27#include "ILexer.h"
28
29#include "Debugging.h"
30#include "Geometry.h"
31#include "Platform.h"
32
33#include "CharacterCategoryMap.h"
34
35#include "Position.h"
36#include "UniqueString.h"
37#include "SplitVector.h"
38#include "Partitioning.h"
39#include "RunStyles.h"
40#include "ContractionState.h"
41#include "CellBuffer.h"
42#include "Indicator.h"
43#include "LineMarker.h"
44#include "Style.h"
45#include "ViewStyle.h"
46#include "CharClassify.h"
47#include "Decoration.h"
48#include "CaseFolder.h"
49#include "Document.h"
50#include "UniConversion.h"
51#include "Selection.h"
52#include "PositionCache.h"
53#include "EditModel.h"
54
55using namespace Scintilla;
56using namespace Scintilla::Internal;
57
58Caret::Caret() noexcept :
59 active(false), on(false), period(500) {}
60
61EditModel::EditModel() : braces{} {
62 inOverstrike = false;
63 xOffset = 0;
64 trackLineWidth = false;
65 posDrag = SelectionPosition(Sci::invalidPosition);
66 braces[0] = Sci::invalidPosition;
67 braces[1] = Sci::invalidPosition;
68 bracesMatchStyle = StyleBraceBad;
69 highlightGuideColumn = 0;
70 hasFocus = false;
71 primarySelection = true;
72 imeInteraction = IMEInteraction::Windowed;
73 bidirectional = Bidirectional::Disabled;
74 foldFlags = FoldFlag::None;
75 foldDisplayTextStyle = FoldDisplayTextStyle::Hidden;
76 hotspot = Range(Sci::invalidPosition);
77 hotspotSingleLine = true;
78 hoverIndicatorPos = Sci::invalidPosition;
79 wrapWidth = LineLayout::wrapWidthInfinite;
80 pdoc = new Document(DocumentOption::Default);
81 pdoc->AddRef();
82 pcs = ContractionStateCreate(pdoc->IsLarge());
83}
84
85EditModel::~EditModel() {
86 try {
87 // This never throws but isn't marked noexcept for compatibility
88 pdoc->Release();
89 } catch (...) {
90 // Ignore any exception
91 }
92 pdoc = nullptr;
93}
94
95bool EditModel::BidirectionalEnabled() const noexcept {
96 return (bidirectional != Bidirectional::Disabled) &&
97 (CpUtf8 == pdoc->dbcsCodePage);
98}
99
100bool EditModel::BidirectionalR2L() const noexcept {
101 return bidirectional == Bidirectional::R2L;
102}
103
104void EditModel::SetDefaultFoldDisplayText(const char *text) {
105 defaultFoldDisplayText = IsNullOrEmpty(text) ? UniqueString() : UniqueStringCopy(text);
106}
107
108const char *EditModel::GetDefaultFoldDisplayText() const noexcept {
109 return defaultFoldDisplayText.get();
110}
111
112const char *EditModel::GetFoldDisplayText(Sci::Line lineDoc) const noexcept {
113 if (foldDisplayTextStyle == FoldDisplayTextStyle::Hidden || pcs->GetExpanded(lineDoc)) {
114 return nullptr;
115 }
116
117 const char *text = pcs->GetFoldDisplayText(lineDoc);
118 return text ? text : defaultFoldDisplayText.get();
119}
120
121InSelection EditModel::LineEndInSelection(Sci::Line lineDoc) const {
122 const Sci::Position posAfterLineEnd = pdoc->LineStart(lineDoc + 1);
123 return sel.InSelectionForEOL(posAfterLineEnd);
124}
125