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1 // textview.cpp |
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2 // |
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3 // Copyright (c) 2009 - 2010 Accenture. All rights reserved. |
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4 // This component and the accompanying materials are made available |
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5 // under the terms of the "Eclipse Public License v1.0" |
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6 // which accompanies this distribution, and is available |
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7 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 // |
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9 // Initial Contributors: |
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10 // Accenture - Initial contribution |
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11 // |
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12 |
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13 #include <e32cmn.h> |
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14 #include <e32cons.h> |
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15 |
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16 #include "textview.h" |
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17 #include "filebuffer.h" |
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18 |
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19 CTextView::CTextView(MConsoleProvider& aConsoleProvider, CFedBufferBase& aBuffer, TInt aPriority) |
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20 : CFedViewBase(aConsoleProvider, aPriority), iBuffer(aBuffer) |
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21 { |
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22 iBuffer.IncRef(); |
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23 CActiveScheduler::Add(this); |
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24 } |
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25 |
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26 void CTextView::ConstructL() |
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27 { |
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28 User::LeaveIfError(iBuffer.RegisterClient(*this, iDes, iRange, iRangeStartLineNumber)); |
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29 // Make iLine as big as it will ever need to be |
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30 TSize size = iConsole.ScreenSize(); |
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31 iLine.CreateL(size.iWidth); |
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32 } |
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33 |
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34 CTextView::~CTextView() |
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35 { |
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36 Cancel(); |
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37 iLine.Close(); |
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38 iBuffer.DecRef(); |
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39 } |
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40 |
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41 void CTextView::DoCancel() |
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42 { |
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43 ASSERT(EFalse); |
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44 } |
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45 |
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46 void CTextView::RunL() |
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47 { |
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48 ASSERT(EFalse); |
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49 /* |
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50 if(iStatus.Int() != KErrNone) |
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51 return; |
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52 |
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53 //redraw by calling DoDrawL if iDrawPoint is within iWindow and iActive is ETrue |
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54 switch(iState) |
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55 { |
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56 case EStateGetData: |
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57 iState = EStateNone; |
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58 if(iActive) |
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59 DoDrawL(); |
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60 break; |
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61 default:; |
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62 } |
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63 */ |
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64 } |
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65 |
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66 TInt CTextView::RunError(TInt aError) |
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67 { |
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68 return aError; |
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69 } |
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70 |
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71 //MViewController |
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72 void CTextView::ShowCursor() |
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73 { |
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74 if (iBuffer.Editable()) |
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75 { |
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76 // Don't show a cursor if the file isn't editable |
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77 iConsole.SetCursorHeight(20); |
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78 } |
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79 } |
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80 |
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81 void CTextView::HideCursor() |
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82 { |
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83 iConsole.SetCursorHeight(0); |
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84 } |
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85 |
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86 void CTextView::ResizeL(const TWindow& aWindow) |
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87 { |
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88 iActive = ETrue; |
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89 TWindow oldWindow = iWindow; |
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90 StoreWindow(aWindow); |
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91 DoResizeL(oldWindow); |
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92 } |
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93 |
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94 void CTextView::RedrawL(const TWindow& aWindow) |
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95 { |
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96 iActive = ETrue; |
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97 StoreWindow(aWindow); |
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98 DoRedrawL(); |
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99 } |
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100 |
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101 void CTextView::DeactivateL() |
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102 { |
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103 iActive = EFalse; |
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104 } |
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105 |
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106 //MSharedCacheClient |
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107 void CTextView::InvalidateBuffer(TRequestStatus& aStatus) |
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108 { |
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109 aStatus = KRequestPending; |
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110 iDes.Set(NULL, 0); |
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111 TRequestStatus* stat = &aStatus; |
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112 User::RequestComplete(stat, KErrNone); |
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113 } |
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114 |
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115 void CTextView::RequestData(TBool aFromTheTop, TInt aOffset) |
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116 { |
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117 if (aFromTheTop) iDrawPoint.SetXY(iWindow.iX, iWindow.iY); |
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118 TInt err = iBuffer.GetData(*this, aOffset); |
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119 if (err) |
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120 { |
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121 HandleDataLoadError(err); |
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122 } |
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123 else |
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124 { |
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125 DoDrawL(); |
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126 } |
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127 } |
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128 |
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129 void CTextView::SeekData(TInt aDocumentPosition, TInt aNumLines) |
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130 { |
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131 if (aDocumentPosition == 0 && aNumLines <= 0) |
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132 { |
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133 // Nothing to do |
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134 return; |
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135 } |
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136 |
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137 iDrawPoint.SetXY(iWindow.iX, iWindow.iY); // Seeks always cause a redraw from the top |
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138 TInt err = iBuffer.SeekFromOffset(*this, aDocumentPosition, aNumLines, iWindow.iWidth-1); // minus one because we can't use the last char |
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139 if (err) |
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140 { |
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141 HandleDataLoadError(err); |
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142 } |
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143 else |
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144 { |
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145 DoDrawL(); |
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146 } |
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147 } |
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148 |
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149 void CTextView::UpdateCursor(const TPoint& aNewPos) |
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150 { |
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151 ASSERT(aNewPos.iX >= 0); |
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152 ASSERT(aNewPos.iY >= 0); |
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153 iCursor = aNewPos; |
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154 ValidateCursor(); |
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155 if (iActive) |
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156 { |
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157 ShowCursor(); |
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158 iConsole.SetCursorPosAbs(iCursor + iWindow.Origin()); |
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159 } |
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160 } |
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161 |
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162 void CTextView::ValidateCursor() |
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163 { |
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164 // Subclasses can override for additional validation |
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165 if(iCursor.iX < 0) |
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166 iCursor.iX = 0; |
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167 if(iCursor.iX >= iWindow.iWidth) |
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168 iCursor.iX = iWindow.iWidth - 1; |
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169 if(iCursor.iY < 0) |
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170 iCursor.iY = 0; |
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171 if(iCursor.iY >= iWindow.iHeight) |
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172 iCursor.iY = iWindow.iHeight -1; |
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173 } |
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174 |
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175 CFedBufferBase& CTextView::Buffer() |
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176 { |
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177 return iBuffer; |
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178 } |
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179 |
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180 void CTextView::HandleDataLoadError(TInt aError) |
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181 { |
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182 iConsoleProvider.InfoPrint(_L("Error loading data: %d"), aError); |
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183 } |