int Editor::KeyCommand()

in ext/scintilla/src/Editor.cxx [3680:3931]

• 246 lines of code
• 103 McCabe index (conditional complexity)

int Editor::KeyCommand(unsigned int iMessage) {
	switch (iMessage) {
	case SCI_LINEDOWN:
		CursorUpOrDown(1, Selection::noSel);
		break;
	case SCI_LINEDOWNEXTEND:
		CursorUpOrDown(1, Selection::selStream);
		break;
	case SCI_LINEDOWNRECTEXTEND:
		CursorUpOrDown(1, Selection::selRectangle);
		break;
	case SCI_PARADOWN:
		ParaUpOrDown(1, Selection::noSel);
		break;
	case SCI_PARADOWNEXTEND:
		ParaUpOrDown(1, Selection::selStream);
		break;
	case SCI_LINESCROLLDOWN:
		ScrollTo(topLine + 1);
		MoveCaretInsideView(false);
		break;
	case SCI_LINEUP:
		CursorUpOrDown(-1, Selection::noSel);
		break;
	case SCI_LINEUPEXTEND:
		CursorUpOrDown(-1, Selection::selStream);
		break;
	case SCI_LINEUPRECTEXTEND:
		CursorUpOrDown(-1, Selection::selRectangle);
		break;
	case SCI_PARAUP:
		ParaUpOrDown(-1, Selection::noSel);
		break;
	case SCI_PARAUPEXTEND:
		ParaUpOrDown(-1, Selection::selStream);
		break;
	case SCI_LINESCROLLUP:
		ScrollTo(topLine - 1);
		MoveCaretInsideView(false);
		break;

	case SCI_CHARLEFT:
	case SCI_CHARLEFTEXTEND:
	case SCI_CHARLEFTRECTEXTEND:
	case SCI_CHARRIGHT:
	case SCI_CHARRIGHTEXTEND:
	case SCI_CHARRIGHTRECTEXTEND:
	case SCI_WORDLEFT:
	case SCI_WORDLEFTEXTEND:
	case SCI_WORDRIGHT:
	case SCI_WORDRIGHTEXTEND:
	case SCI_WORDLEFTEND:
	case SCI_WORDLEFTENDEXTEND:
	case SCI_WORDRIGHTEND:
	case SCI_WORDRIGHTENDEXTEND:
	case SCI_WORDPARTLEFT:
	case SCI_WORDPARTLEFTEXTEND:
	case SCI_WORDPARTRIGHT:
	case SCI_WORDPARTRIGHTEXTEND:
	case SCI_HOME:
	case SCI_HOMEEXTEND:
	case SCI_HOMERECTEXTEND:
	case SCI_HOMEDISPLAY:
	case SCI_HOMEDISPLAYEXTEND:
	case SCI_HOMEWRAP:
	case SCI_HOMEWRAPEXTEND:
	case SCI_VCHOME:
	case SCI_VCHOMEEXTEND:
	case SCI_VCHOMERECTEXTEND:
	case SCI_VCHOMEDISPLAY:
	case SCI_VCHOMEDISPLAYEXTEND:
	case SCI_VCHOMEWRAP:
	case SCI_VCHOMEWRAPEXTEND:
	case SCI_LINEEND:
	case SCI_LINEENDEXTEND:
	case SCI_LINEENDRECTEXTEND:
	case SCI_LINEENDDISPLAY:
	case SCI_LINEENDDISPLAYEXTEND:
	case SCI_LINEENDWRAP:
	case SCI_LINEENDWRAPEXTEND:
		return HorizontalMove(iMessage);

	case SCI_DOCUMENTSTART:
		MovePositionTo(0);
		SetLastXChosen();
		break;
	case SCI_DOCUMENTSTARTEXTEND:
		MovePositionTo(0, Selection::selStream);
		SetLastXChosen();
		break;
	case SCI_DOCUMENTEND:
		MovePositionTo(pdoc->Length());
		SetLastXChosen();
		break;
	case SCI_DOCUMENTENDEXTEND:
		MovePositionTo(pdoc->Length(), Selection::selStream);
		SetLastXChosen();
		break;
	case SCI_STUTTEREDPAGEUP:
		PageMove(-1, Selection::noSel, true);
		break;
	case SCI_STUTTEREDPAGEUPEXTEND:
		PageMove(-1, Selection::selStream, true);
		break;
	case SCI_STUTTEREDPAGEDOWN:
		PageMove(1, Selection::noSel, true);
		break;
	case SCI_STUTTEREDPAGEDOWNEXTEND:
		PageMove(1, Selection::selStream, true);
		break;
	case SCI_PAGEUP:
		PageMove(-1);
		break;
	case SCI_PAGEUPEXTEND:
		PageMove(-1, Selection::selStream);
		break;
	case SCI_PAGEUPRECTEXTEND:
		PageMove(-1, Selection::selRectangle);
		break;
	case SCI_PAGEDOWN:
		PageMove(1);
		break;
	case SCI_PAGEDOWNEXTEND:
		PageMove(1, Selection::selStream);
		break;
	case SCI_PAGEDOWNRECTEXTEND:
		PageMove(1, Selection::selRectangle);
		break;
	case SCI_EDITTOGGLEOVERTYPE:
		inOverstrike = !inOverstrike;
		ContainerNeedsUpdate(SC_UPDATE_SELECTION);
		ShowCaretAtCurrentPosition();
		SetIdle(true);
		break;
	case SCI_CANCEL:            	// Cancel any modes - handled in subclass
		// Also unselect text
		CancelModes();
		if ((sel.Count() > 1) && !sel.IsRectangular()) {
			// Drop additional selections
			InvalidateWholeSelection();
			sel.DropAdditionalRanges();
		}
		break;
	case SCI_DELETEBACK:
		DelCharBack(true);
		if ((caretSticky == SC_CARETSTICKY_OFF) || (caretSticky == SC_CARETSTICKY_WHITESPACE)) {
			SetLastXChosen();
		}
		EnsureCaretVisible();
		break;
	case SCI_DELETEBACKNOTLINE:
		DelCharBack(false);
		if ((caretSticky == SC_CARETSTICKY_OFF) || (caretSticky == SC_CARETSTICKY_WHITESPACE)) {
			SetLastXChosen();
		}
		EnsureCaretVisible();
		break;
	case SCI_TAB:
		Indent(true);
		if (caretSticky == SC_CARETSTICKY_OFF) {
			SetLastXChosen();
		}
		EnsureCaretVisible();
		ShowCaretAtCurrentPosition();		// Avoid blinking
		break;
	case SCI_BACKTAB:
		Indent(false);
		if ((caretSticky == SC_CARETSTICKY_OFF) || (caretSticky == SC_CARETSTICKY_WHITESPACE)) {
			SetLastXChosen();
		}
		EnsureCaretVisible();
		ShowCaretAtCurrentPosition();		// Avoid blinking
		break;
	case SCI_NEWLINE:
		NewLine();
		break;
	case SCI_FORMFEED:
		AddChar('\f');
		break;
	case SCI_ZOOMIN:
		if (vs.zoomLevel < 20) {
			vs.zoomLevel++;
			InvalidateStyleRedraw();
			NotifyZoom();
		}
		break;
	case SCI_ZOOMOUT:
		if (vs.zoomLevel > -10) {
			vs.zoomLevel--;
			InvalidateStyleRedraw();
			NotifyZoom();
		}
		break;

	case SCI_DELWORDLEFT:
	case SCI_DELWORDRIGHT:
	case SCI_DELWORDRIGHTEND:
	case SCI_DELLINELEFT:
	case SCI_DELLINERIGHT:
		return DelWordOrLine(iMessage);

	case SCI_LINECOPY: {
			const Sci::Line lineStart = pdoc->SciLineFromPosition(SelectionStart().Position());
			const Sci::Line lineEnd = pdoc->SciLineFromPosition(SelectionEnd().Position());
			CopyRangeToClipboard(pdoc->LineStart(lineStart),
				pdoc->LineStart(lineEnd + 1));
		}
		break;
	case SCI_LINECUT: {
			const Sci::Line lineStart = pdoc->SciLineFromPosition(SelectionStart().Position());
			const Sci::Line lineEnd = pdoc->SciLineFromPosition(SelectionEnd().Position());
			const Sci::Position start = pdoc->LineStart(lineStart);
			const Sci::Position end = pdoc->LineStart(lineEnd + 1);
			SetSelection(start, end);
			Cut();
			SetLastXChosen();
		}
		break;
	case SCI_LINEDELETE: {
			const Sci::Line line = pdoc->SciLineFromPosition(sel.MainCaret());
			const Sci::Position start = pdoc->LineStart(line);
			const Sci::Position end = pdoc->LineStart(line + 1);
			pdoc->DeleteChars(start, end - start);
		}
		break;
	case SCI_LINETRANSPOSE:
		LineTranspose();
		break;
	case SCI_LINEREVERSE:
		LineReverse();
		break;
	case SCI_LINEDUPLICATE:
		Duplicate(true);
		break;
	case SCI_SELECTIONDUPLICATE:
		Duplicate(false);
		break;
	case SCI_LOWERCASE:
		ChangeCaseOfSelection(cmLower);
		break;
	case SCI_UPPERCASE:
		ChangeCaseOfSelection(cmUpper);
		break;
	case SCI_SCROLLTOSTART:
		ScrollTo(0);
		break;
	case SCI_SCROLLTOEND:
		ScrollTo(MaxScrollPos());
		break;
	}
	return 0;
}