Re-land else-after-returns

Revert "Revert "Fix else-after-returns throughout pdfium.""
This reverts commit 4eb4d7f6c707cc2c23c806aa540d055c8832b55d.

Fix one naming conflict.

TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/1243953004 .

1 files changed, 272 insertions, 284 deletions

diff --git a/fpdfsdk/src/formfiller/FFL_ComboBox.cpp b/fpdfsdk/src/formfiller/FFL_ComboBox.cpp
index d3a494405f..841b45ecba 100644
--- a/fpdfsdk/src/formfiller/FFL_ComboBox.cpp
+++ b/fpdfsdk/src/formfiller/FFL_ComboBox.cpp
@@ -14,7 +14,7 @@
 /* ------------------------------- CFFL_ComboBox ------------------------------- */
 
 CFFL_ComboBox::CFFL_ComboBox(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pAnnot) :
-	CFFL_FormFiller(pApp, pAnnot), m_pFontMap( NULL )
+    CFFL_FormFiller(pApp, pAnnot), m_pFontMap( NULL )
 {
         m_State.nIndex = 0;
         m_State.nStart = 0;
@@ -28,375 +28,363 @@ CFFL_ComboBox::~CFFL_ComboBox()
 
 PWL_CREATEPARAM CFFL_ComboBox::GetCreateParam()
 {
-	PWL_CREATEPARAM cp = CFFL_FormFiller::GetCreateParam();
+    PWL_CREATEPARAM cp = CFFL_FormFiller::GetCreateParam();
 
-	ASSERT(m_pWidget != NULL);
+    ASSERT(m_pWidget != NULL);
 
-	int nFlags = m_pWidget->GetFieldFlags();
+    int nFlags = m_pWidget->GetFieldFlags();
 
-	if (nFlags & FIELDFLAG_EDIT)
-	{
-		cp.dwFlags |= PCBS_ALLOWCUSTOMTEXT;
-	}
+    if (nFlags & FIELDFLAG_EDIT)
+    {
+        cp.dwFlags |= PCBS_ALLOWCUSTOMTEXT;
+    }
 
-	if (!m_pFontMap)
-	{
-		m_pFontMap = new CBA_FontMap(m_pWidget, GetSystemHandler());
-		m_pFontMap->Initial();
-	}
+    if (!m_pFontMap)
+    {
+        m_pFontMap = new CBA_FontMap(m_pWidget, GetSystemHandler());
+        m_pFontMap->Initial();
+    }
 
-	cp.pFontMap = m_pFontMap;
-	cp.pFocusHandler = this;
+    cp.pFontMap = m_pFontMap;
+    cp.pFocusHandler = this;
 
-	return cp;
+    return cp;
 }
 
 CPWL_Wnd* CFFL_ComboBox::NewPDFWindow(const PWL_CREATEPARAM& cp, CPDFSDK_PageView* pPageView)
 {
-	CPWL_ComboBox * pWnd = new CPWL_ComboBox();
-	pWnd->AttachFFLData(this);
-	pWnd->Create(cp);
-
-	CFFL_IFormFiller* pFormFiller = m_pApp->GetIFormFiller();
-	pWnd->SetFillerNotify(pFormFiller);
-
-	int32_t nCurSel = m_pWidget->GetSelectedIndex(0);
-	CFX_WideString swText;
-	if (nCurSel < 0)
-		swText = m_pWidget->GetValue();
-	else
-		swText = m_pWidget->GetOptionLabel(nCurSel);
-
-	for (int32_t i=0,sz=m_pWidget->CountOptions(); i<sz; i++)
-	{
-		pWnd->AddString(m_pWidget->GetOptionLabel(i).c_str());
-	}
-
-	pWnd->SetSelect(nCurSel);
-	pWnd->SetText(swText.c_str());
-	return pWnd;
+    CPWL_ComboBox * pWnd = new CPWL_ComboBox();
+    pWnd->AttachFFLData(this);
+    pWnd->Create(cp);
+
+    CFFL_IFormFiller* pFormFiller = m_pApp->GetIFormFiller();
+    pWnd->SetFillerNotify(pFormFiller);
+
+    int32_t nCurSel = m_pWidget->GetSelectedIndex(0);
+    CFX_WideString swText;
+    if (nCurSel < 0)
+        swText = m_pWidget->GetValue();
+    else
+        swText = m_pWidget->GetOptionLabel(nCurSel);
+
+    for (int32_t i=0,sz=m_pWidget->CountOptions(); i<sz; i++)
+    {
+        pWnd->AddString(m_pWidget->GetOptionLabel(i).c_str());
+    }
+
+    pWnd->SetSelect(nCurSel);
+    pWnd->SetText(swText.c_str());
+    return pWnd;
 }
 
 
-FX_BOOL	CFFL_ComboBox::OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags)
+FX_BOOL CFFL_ComboBox::OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags)
 {
-	return CFFL_FormFiller::OnChar(pAnnot, nChar, nFlags);
+    return CFFL_FormFiller::OnChar(pAnnot, nChar, nFlags);
 }
 
-FX_BOOL	CFFL_ComboBox::IsDataChanged(CPDFSDK_PageView* pPageView)
+FX_BOOL CFFL_ComboBox::IsDataChanged(CPDFSDK_PageView* pPageView)
 {
-	if (CPWL_ComboBox * pWnd = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-	{
-		int32_t nCurSel = pWnd->GetSelect();
-
-		ASSERT(m_pWidget != NULL);
-
-		if (m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT)
-		{
-			if (nCurSel >= 0)
-			{
-				return nCurSel != m_pWidget->GetSelectedIndex(0);
-			}
-			else
-			{
-				return pWnd->GetText() != m_pWidget->GetValue();
-			}
-		}
-		else
-		{
-			return nCurSel != m_pWidget->GetSelectedIndex(0);
-		}
-	}
-
-	return FALSE;
+    CPWL_ComboBox* pWnd = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE);
+    if (!pWnd)
+        return FALSE;
+
+    int32_t nCurSel = pWnd->GetSelect();
+    if (!(m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT))
+        return nCurSel != m_pWidget->GetSelectedIndex(0);
+
+    if (nCurSel >= 0)
+        return nCurSel != m_pWidget->GetSelectedIndex(0);
+
+    return pWnd->GetText() != m_pWidget->GetValue();
 }
 
 void CFFL_ComboBox::SaveData(CPDFSDK_PageView* pPageView)
 {
-	ASSERT(m_pWidget != NULL);
-
-	if (CPWL_ComboBox* pWnd = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-	{
-		CFX_WideString swText = pWnd->GetText();
-		int32_t nCurSel = pWnd->GetSelect();
-
-		//mantis:0004157
-		FX_BOOL bSetValue = TRUE;
-
-		if (m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT)
-		{
-			if (nCurSel >= 0)
-			{
-				if (swText != m_pWidget->GetOptionLabel(nCurSel))
-					bSetValue = TRUE;
-				else
-					bSetValue = FALSE;
-			}
-			else
-				bSetValue = TRUE;
-		}
-		else
-			bSetValue = FALSE;
-
-		CFX_WideString sOldValue;
-
-
-		if (bSetValue)
-		{
-			sOldValue = m_pWidget->GetValue();
-			m_pWidget->SetValue(swText, FALSE);
-		}
-		else
-		{
-			m_pWidget->GetSelectedIndex(0);
-			m_pWidget->SetOptionSelection(nCurSel, TRUE, FALSE);
-		}
-
-		m_pWidget->ResetFieldAppearance(TRUE);
-		m_pWidget->UpdateField();
-		SetChangeMark();
-
-		m_pWidget->GetPDFPage();
-
-
-	}
+    ASSERT(m_pWidget != NULL);
+
+    if (CPWL_ComboBox* pWnd = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+    {
+        CFX_WideString swText = pWnd->GetText();
+        int32_t nCurSel = pWnd->GetSelect();
+
+        //mantis:0004157
+        FX_BOOL bSetValue = TRUE;
+
+        if (m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT)
+        {
+            if (nCurSel >= 0)
+            {
+                if (swText != m_pWidget->GetOptionLabel(nCurSel))
+                    bSetValue = TRUE;
+                else
+                    bSetValue = FALSE;
+            }
+            else
+                bSetValue = TRUE;
+        }
+        else
+            bSetValue = FALSE;
+
+        CFX_WideString sOldValue;
+
+
+        if (bSetValue)
+        {
+            sOldValue = m_pWidget->GetValue();
+            m_pWidget->SetValue(swText, FALSE);
+        }
+        else
+        {
+            m_pWidget->GetSelectedIndex(0);
+            m_pWidget->SetOptionSelection(nCurSel, TRUE, FALSE);
+        }
+
+        m_pWidget->ResetFieldAppearance(TRUE);
+        m_pWidget->UpdateField();
+        SetChangeMark();
+
+        m_pWidget->GetPDFPage();
+
+
+    }
 }
 
  void CFFL_ComboBox::GetActionData( CPDFSDK_PageView* pPageView, CPDF_AAction::AActionType type, PDFSDK_FieldAction& fa)
 {
-	switch (type)
-	{
-	case CPDF_AAction::KeyStroke:
-		if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-		{
-			if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
-			{
-				fa.bFieldFull = pEdit->IsTextFull();
-				int nSelStart = 0;
-				int nSelEnd = 0;
-				pEdit->GetSel(nSelStart, nSelEnd);
-				fa.nSelEnd = nSelEnd;
-				fa.nSelStart = nSelStart;
-				fa.sValue = pEdit->GetText();
-				fa.sChangeEx = GetSelectExportText();
-
-				if (fa.bFieldFull)
-				{
-					fa.sChange = L"";
-					fa.sChangeEx = L"";
-				}
-			}
-		}
-		break;
-	case CPDF_AAction::Validate:
-		if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-		{
-			if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
-			{
-				fa.sValue = pEdit->GetText();
-			}
-		}
-		break;
-	case CPDF_AAction::LoseFocus:
-	case CPDF_AAction::GetFocus:
-		ASSERT(m_pWidget != NULL);
-		fa.sValue = m_pWidget->GetValue();
-		break;
-	default:
-		break;
-	}
+    switch (type)
+    {
+    case CPDF_AAction::KeyStroke:
+        if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+        {
+            if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
+            {
+                fa.bFieldFull = pEdit->IsTextFull();
+                int nSelStart = 0;
+                int nSelEnd = 0;
+                pEdit->GetSel(nSelStart, nSelEnd);
+                fa.nSelEnd = nSelEnd;
+                fa.nSelStart = nSelStart;
+                fa.sValue = pEdit->GetText();
+                fa.sChangeEx = GetSelectExportText();
+
+                if (fa.bFieldFull)
+                {
+                    fa.sChange = L"";
+                    fa.sChangeEx = L"";
+                }
+            }
+        }
+        break;
+    case CPDF_AAction::Validate:
+        if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+        {
+            if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
+            {
+                fa.sValue = pEdit->GetText();
+            }
+        }
+        break;
+    case CPDF_AAction::LoseFocus:
+    case CPDF_AAction::GetFocus:
+        ASSERT(m_pWidget != NULL);
+        fa.sValue = m_pWidget->GetValue();
+        break;
+    default:
+        break;
+    }
 }
 
 
 
 void CFFL_ComboBox::SetActionData(CPDFSDK_PageView* pPageView, CPDF_AAction::AActionType type,
-									const PDFSDK_FieldAction& fa)
+                                    const PDFSDK_FieldAction& fa)
 {
-	switch (type)
-	{
-	case CPDF_AAction::KeyStroke:
-		if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-		{
-			if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
-			{
-				pEdit->SetSel(fa.nSelStart, fa.nSelEnd);
-				pEdit->ReplaceSel(fa.sChange.c_str());
-			}
-		}
-		break;
-	default:
-		break;
-	}
+    switch (type)
+    {
+    case CPDF_AAction::KeyStroke:
+        if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+        {
+            if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
+            {
+                pEdit->SetSel(fa.nSelStart, fa.nSelEnd);
+                pEdit->ReplaceSel(fa.sChange.c_str());
+            }
+        }
+        break;
+    default:
+        break;
+    }
 }
 
-FX_BOOL	CFFL_ComboBox::IsActionDataChanged(CPDF_AAction::AActionType type, const PDFSDK_FieldAction& faOld,
-									const PDFSDK_FieldAction& faNew)
+FX_BOOL CFFL_ComboBox::IsActionDataChanged(CPDF_AAction::AActionType type, const PDFSDK_FieldAction& faOld,
+                                    const PDFSDK_FieldAction& faNew)
 {
-	switch (type)
-	{
-	case CPDF_AAction::KeyStroke:
-		return (!faOld.bFieldFull && faOld.nSelEnd != faNew.nSelEnd) || faOld.nSelStart != faNew.nSelStart ||
-			faOld.sChange != faNew.sChange;
-	default:
-		break;
-	}
-
-	return FALSE;
+    switch (type)
+    {
+    case CPDF_AAction::KeyStroke:
+        return (!faOld.bFieldFull && faOld.nSelEnd != faNew.nSelEnd) || faOld.nSelStart != faNew.nSelStart ||
+            faOld.sChange != faNew.sChange;
+    default:
+        break;
+    }
+
+    return FALSE;
 }
 
 void CFFL_ComboBox::SaveState(CPDFSDK_PageView* pPageView)
 {
-	ASSERT(pPageView != NULL);
-
-	if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-	{
-		m_State.nIndex = pComboBox->GetSelect();
-
-		if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
-		{
-			pEdit->GetSel(m_State.nStart, m_State.nEnd);
-			m_State.sValue = pEdit->GetText();
-		}
-	}
+    ASSERT(pPageView != NULL);
+
+    if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+    {
+        m_State.nIndex = pComboBox->GetSelect();
+
+        if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
+        {
+            pEdit->GetSel(m_State.nStart, m_State.nEnd);
+            m_State.sValue = pEdit->GetText();
+        }
+    }
 }
 
 void CFFL_ComboBox::RestoreState(CPDFSDK_PageView* pPageView)
 {
-	ASSERT(pPageView != NULL);
-
-	if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, TRUE))
-	{
-		if (m_State.nIndex >= 0)
-			pComboBox->SetSelect(m_State.nIndex);
-		else
-		{
-			if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
-			{
-				pEdit->SetText(m_State.sValue.c_str());
-				pEdit->SetSel(m_State.nStart, m_State.nEnd);
-			}
-		}
-	}
+    ASSERT(pPageView != NULL);
+
+    if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, TRUE))
+    {
+        if (m_State.nIndex >= 0)
+            pComboBox->SetSelect(m_State.nIndex);
+        else
+        {
+            if (CPWL_Edit* pEdit = (CPWL_Edit*)*pComboBox)
+            {
+                pEdit->SetText(m_State.sValue.c_str());
+                pEdit->SetSel(m_State.nStart, m_State.nEnd);
+            }
+        }
+    }
 }
 
 CPWL_Wnd* CFFL_ComboBox::ResetPDFWindow(CPDFSDK_PageView* pPageView, FX_BOOL bRestoreValue)
 {
-	if (bRestoreValue)
-		SaveState(pPageView);
+    if (bRestoreValue)
+        SaveState(pPageView);
 
-	DestroyPDFWindow(pPageView);
+    DestroyPDFWindow(pPageView);
 
-	CPWL_Wnd* pRet = NULL;
+    CPWL_Wnd* pRet = NULL;
 
-	if (bRestoreValue)
-	{
-		RestoreState(pPageView);
-		pRet = GetPDFWindow(pPageView, FALSE);
-	}
-	else
-		pRet = GetPDFWindow(pPageView, TRUE);
+    if (bRestoreValue)
+    {
+        RestoreState(pPageView);
+        pRet = GetPDFWindow(pPageView, FALSE);
+    }
+    else
+        pRet = GetPDFWindow(pPageView, TRUE);
 
-	m_pWidget->UpdateField();
+    m_pWidget->UpdateField();
 
-	return pRet;
+    return pRet;
 }
 
 void CFFL_ComboBox::OnKeyStroke(FX_BOOL bKeyDown, FX_UINT nFlag)
 {
-	ASSERT(m_pWidget != NULL);
-
-	int nFlags = m_pWidget->GetFieldFlags();
-
-	if (nFlags & FIELDFLAG_COMMITONSELCHANGE)
-	{
-		if (m_bValid)
-		{
-			CPDFSDK_PageView* pPageView = GetCurPageView();
-			ASSERT(pPageView != NULL);
-
-			if (CommitData(pPageView, nFlag))
-			{
-				DestroyPDFWindow(pPageView);
-				m_bValid = FALSE;
-			}
-		}
-	}
+    ASSERT(m_pWidget != NULL);
+
+    int nFlags = m_pWidget->GetFieldFlags();
+
+    if (nFlags & FIELDFLAG_COMMITONSELCHANGE)
+    {
+        if (m_bValid)
+        {
+            CPDFSDK_PageView* pPageView = GetCurPageView();
+            ASSERT(pPageView != NULL);
+
+            if (CommitData(pPageView, nFlag))
+            {
+                DestroyPDFWindow(pPageView);
+                m_bValid = FALSE;
+            }
+        }
+    }
 }
 
 void CFFL_ComboBox::OnSetFocus(CPWL_Wnd* pWnd)
 {
-	ASSERT(m_pApp != NULL);
+    ASSERT(m_pApp != NULL);
 
-	ASSERT(pWnd != NULL);
+    ASSERT(pWnd != NULL);
 
-	if (pWnd->GetClassName() == PWL_CLASSNAME_EDIT)
-	{
-		CPWL_Edit* pEdit = (CPWL_Edit*)pWnd;
-		pEdit->SetCharSet(134);
-		pEdit->SetCodePage(936);
+    if (pWnd->GetClassName() == PWL_CLASSNAME_EDIT)
+    {
+        CPWL_Edit* pEdit = (CPWL_Edit*)pWnd;
+        pEdit->SetCharSet(134);
+        pEdit->SetCodePage(936);
 
-		pEdit->SetReadyToInput();
-		CFX_WideString wsText = pEdit->GetText();
-		int nCharacters = wsText.GetLength();
-		CFX_ByteString bsUTFText = wsText.UTF16LE_Encode();
-		unsigned short* pBuffer = (unsigned short*)bsUTFText.c_str();
-		m_pApp->FFI_OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer, nCharacters, TRUE);
+        pEdit->SetReadyToInput();
+        CFX_WideString wsText = pEdit->GetText();
+        int nCharacters = wsText.GetLength();
+        CFX_ByteString bsUTFText = wsText.UTF16LE_Encode();
+        unsigned short* pBuffer = (unsigned short*)bsUTFText.c_str();
+        m_pApp->FFI_OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer, nCharacters, TRUE);
 
- 		pEdit->SetEditNotify(this);
-	}
+        pEdit->SetEditNotify(this);
+    }
 }
 
 void CFFL_ComboBox::OnKillFocus(CPWL_Wnd* pWnd)
 {
-	ASSERT(m_pApp != NULL);
+    ASSERT(m_pApp != NULL);
 }
 
-FX_BOOL	CFFL_ComboBox::CanCopy(CPDFSDK_Document* pDocument)
+FX_BOOL CFFL_ComboBox::CanCopy(CPDFSDK_Document* pDocument)
 {
-	ASSERT(pDocument != NULL);
+    ASSERT(pDocument != NULL);
 
-	return FALSE;
+    return FALSE;
 }
 
 FX_BOOL CFFL_ComboBox::CanCut(CPDFSDK_Document* pDocument)
 {
-	ASSERT(pDocument != NULL);
+    ASSERT(pDocument != NULL);
 
-	return FALSE;
+    return FALSE;
 }
 
-FX_BOOL	CFFL_ComboBox::CanPaste(CPDFSDK_Document* pDocument)
+FX_BOOL CFFL_ComboBox::CanPaste(CPDFSDK_Document* pDocument)
 {
-	ASSERT(pDocument != NULL);
+    ASSERT(pDocument != NULL);
 
-	return FALSE;
+    return FALSE;
 }
 
 void CFFL_ComboBox::OnAddUndo(CPWL_Edit* pEdit)
 {
-	ASSERT(pEdit != NULL);
+    ASSERT(pEdit != NULL);
 }
 
 CFX_WideString CFFL_ComboBox::GetSelectExportText()
 {
-	CFX_WideString swRet;
-
-	int nExport = -1;
-	CPDFSDK_PageView *pPageView = GetCurPageView();
-	if (CPWL_ComboBox * pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
-	{
-		nExport = pComboBox->GetSelect();
-	}
-
-	if (nExport >= 0)
-	{
-		if (CPDF_FormField * pFormField = m_pWidget->GetFormField())
-		{
-			swRet = pFormField->GetOptionValue(nExport);
-			if (swRet.IsEmpty())
-				swRet = pFormField->GetOptionLabel(nExport);
-		}
-	}
-
-	return swRet;
+    CFX_WideString swRet;
+
+    int nExport = -1;
+    CPDFSDK_PageView *pPageView = GetCurPageView();
+    if (CPWL_ComboBox * pComboBox = (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE))
+    {
+        nExport = pComboBox->GetSelect();
+    }
+
+    if (nExport >= 0)
+    {
+        if (CPDF_FormField * pFormField = m_pWidget->GetFormField())
+        {
+            swRet = pFormField->GetOptionValue(nExport);
+            if (swRet.IsEmpty())
+                swRet = pFormField->GetOptionLabel(nExport);
+        }
+    }
+
+    return swRet;
 }