fpdfsdk/src/javascript/JS_EventHandler.cpp

// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "../../include/javascript/JavaScript.h"
#include "../../include/javascript/IJavaScript.h"
#include "../../include/javascript/JS_EventHandler.h"
#include "../../include/javascript/JS_Context.h"
#include "../../include/javascript/JS_Runtime.h"
#include "../../include/javascript/JS_Define.h"
#include "../../include/javascript/JS_Object.h"
#include "../../include/javascript/JS_Value.h"
#include "../../include/javascript/Document.h"
#include "../../include/javascript/Field.h"

/* ---------------------------- CJS_EventHandler ---------------------------- */

CJS_EventHandler::CJS_EventHandler(CJS_Context * pContext)   :
    m_pJSContext(pContext),
    m_eEventType(JET_UNKNOWN),
    m_bValid(FALSE),
    m_pWideStrChange(NULL),
    m_nCommitKey(-1),
    m_bKeyDown(FALSE),
    m_bModifier(FALSE),
    m_bShift(FALSE),
    m_pISelEnd(NULL),
    m_nSelEndDu(0),
    m_pISelStart(NULL),
    m_nSelStartDu(0),
    m_bWillCommit(FALSE),
    m_pValue(NULL),
    m_bFieldFull(FALSE),
    m_pbRc(NULL),
    m_bRcDu(FALSE),
    m_pSourceDoc(NULL),
    m_pTargetBookMark(NULL),
    m_pTargetDoc(NULL),
    m_pTargetAnnot(NULL)
{
}

CJS_EventHandler::~CJS_EventHandler()
{
}

void CJS_EventHandler::OnApp_Init()
{
    Initial(JET_APP_INIT);
}

void CJS_EventHandler::OnDoc_Open(CPDFSDK_Document* pDoc, const CFX_WideString& strTargetName)
{
    Initial(JET_DOC_OPEN);

    m_pTargetDoc = pDoc;
    m_strTargetName = strTargetName;
}

void CJS_EventHandler::OnDoc_WillPrint(CPDFSDK_Document* pDoc)
{
    Initial(JET_DOC_WILLPRINT);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnDoc_DidPrint(CPDFSDK_Document* pDoc)
{
    Initial(JET_DOC_DIDPRINT);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnDoc_WillSave(CPDFSDK_Document* pDoc)
{
    Initial(JET_DOC_WILLSAVE);
    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnDoc_DidSave(CPDFSDK_Document* pDoc)
{
    Initial(JET_DOC_DIDSAVE);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnDoc_WillClose(CPDFSDK_Document* pDoc)
{
    Initial(JET_DOC_WILLCLOSE);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnPage_Open(CPDFSDK_Document* pDoc)
{
    Initial(JET_PAGE_OPEN);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnPage_Close(CPDFSDK_Document* pDoc)
{
    Initial(JET_PAGE_CLOSE);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnPage_InView(CPDFSDK_Document* pDoc)
{
    Initial(JET_PAGE_INVIEW);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnPage_OutView(CPDFSDK_Document* pDoc)
{
    Initial(JET_PAGE_OUTVIEW);

    m_pTargetDoc = pDoc;
}

void CJS_EventHandler::OnField_MouseEnter(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget)
{
    Initial(JET_FIELD_MOUSEENTER);

    m_bModifier = bModifier;
    m_bShift = bShift;

    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
}

void CJS_EventHandler::OnField_MouseExit(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget)
{
    Initial(JET_FIELD_MOUSEEXIT);

    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
}

void CJS_EventHandler::OnField_MouseDown(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget)
{
    Initial(JET_FIELD_MOUSEDOWN);
    m_eEventType = JET_FIELD_MOUSEDOWN;

    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
}

void CJS_EventHandler::OnField_MouseUp(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget)
{
    Initial(JET_FIELD_MOUSEUP);

    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
}

void CJS_EventHandler::OnField_Focus(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget,
                                     const CFX_WideString& Value)
{
    Initial(JET_FIELD_FOCUS);

    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = (CFX_WideString*)&Value;
}

void CJS_EventHandler::OnField_Blur(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget,
                                    const CFX_WideString& Value)
{
    Initial(JET_FIELD_BLUR);

    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = (CFX_WideString*)&Value;
}

void CJS_EventHandler::OnField_Keystroke(CFX_WideString &strChange,
                                         const CFX_WideString& strChangeEx, FX_BOOL KeyDown,
                                         FX_BOOL bModifier, int& nSelEnd, int& nSelStart,
                                         FX_BOOL bShift, CPDF_FormField* pTarget,
                                         CFX_WideString& Value, FX_BOOL bWillCommit,
                                          FX_BOOL bFieldFull, FX_BOOL& bRc)
{
    Initial(JET_FIELD_KEYSTROKE);

    m_nCommitKey = 0;
    m_pWideStrChange = &strChange;
    m_WideStrChangeEx = strChangeEx;
    m_bKeyDown = KeyDown;
    m_bModifier = bModifier;
    m_pISelEnd = &nSelEnd;
    m_pISelStart = &nSelStart;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = &Value;
    m_bWillCommit = bWillCommit;
    m_pbRc = &bRc;
    m_bFieldFull = bFieldFull;
}

void CJS_EventHandler::OnField_Validate(CFX_WideString& strChange, const CFX_WideString& strChangeEx,
                                        FX_BOOL bKeyDown, FX_BOOL bModifier, FX_BOOL bShift,
                                        CPDF_FormField* pTarget, CFX_WideString& Value, FX_BOOL& bRc)
{
    Initial(JET_FIELD_VALIDATE);

    m_pWideStrChange = &strChange;
    m_WideStrChangeEx = strChangeEx;
    m_bKeyDown = bKeyDown;
    m_bModifier = bModifier;
    m_bShift = bShift;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = &Value;
    m_pbRc = &bRc;
}

void CJS_EventHandler::OnField_Calculate(CPDF_FormField* pSource, CPDF_FormField* pTarget,
                                         CFX_WideString& Value, FX_BOOL& bRc)
{
    Initial(JET_FIELD_CALCULATE);

    if (pSource)
        m_strSourceName = pSource->GetFullName();
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = &Value;
    m_pbRc = &bRc;
}

void CJS_EventHandler::OnField_Format(CPDF_FormField* pTarget,
                                      CFX_WideString& Value,
                                      FX_BOOL bWillCommit)
{
    Initial(JET_FIELD_FORMAT);

    m_nCommitKey = 0;
    ASSERT(pTarget != NULL);
    m_strTargetName = pTarget->GetFullName();
    m_pValue = &Value;
    m_bWillCommit = bWillCommit;
}

void CJS_EventHandler::OnScreen_Focus(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_FOCUS);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_Blur(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_BLUR);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_Open(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_OPEN);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_Close(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_CLOSE);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_MouseDown(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_MOUSEDOWN);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_MouseUp(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_MOUSEUP);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_MouseEnter(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_MOUSEENTER);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_MouseExit(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_MOUSEEXIT);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_InView(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_INVIEW);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnScreen_OutView(FX_BOOL bModifier, FX_BOOL bShift, CPDFSDK_Annot* pScreen)
{
    Initial(JET_SCREEN_OUTVIEW);

    m_bModifier = bModifier;
    m_bShift = bShift;
    m_pTargetAnnot = pScreen;
}

void CJS_EventHandler::OnLink_MouseUp(CPDFSDK_Document* pTarget)
{
    Initial(JET_LINK_MOUSEUP);

    m_pTargetDoc = pTarget;
}

void CJS_EventHandler::OnBookmark_MouseUp(CPDF_Bookmark* pBookMark)
{
    Initial(JET_BOOKMARK_MOUSEUP);

    m_pTargetBookMark = pBookMark;
}

void CJS_EventHandler::OnMenu_Exec(CPDFSDK_Document* pTarget, const CFX_WideString& strTargetName)
{
    Initial(JET_MENU_EXEC);

    m_pTargetDoc = pTarget;
    m_strTargetName = strTargetName;
}

void CJS_EventHandler::OnExternal_Exec()
{
    Initial(JET_EXTERNAL_EXEC);
}

void CJS_EventHandler::OnBatchExec(CPDFSDK_Document* pTarget)
{
    Initial(JET_BATCH_EXEC);

    m_pTargetDoc = pTarget;
}

void CJS_EventHandler::OnConsole_Exec()
{
    Initial(JET_CONSOLE_EXEC);
}


void CJS_EventHandler::Initial(JS_EVENT_T type)
{
    m_eEventType = type;

    m_strTargetName = L"";
    m_strSourceName = L"";
    m_pWideStrChange = NULL;
    m_WideStrChangeDu = L"";
    m_WideStrChangeEx = L"";
    m_nCommitKey = -1;
    m_bKeyDown = FALSE;
    m_bModifier = FALSE;
    m_bShift = FALSE;
    m_pISelEnd = NULL;
    m_nSelEndDu = 0;
    m_pISelStart = NULL;
    m_nSelStartDu = 0;
    m_bWillCommit = FALSE;
    m_pValue = NULL;
    m_bFieldFull = FALSE;
    m_pbRc = NULL;
    m_bRcDu = FALSE;

    m_pSourceDoc = NULL;
    m_pTargetBookMark = NULL;
    m_pTargetDoc = NULL;
    m_pTargetAnnot = NULL;

    m_bValid = TRUE;
}

void CJS_EventHandler::Destroy()
{
    m_bValid = FALSE;
}

FX_BOOL CJS_EventHandler::IsValid()
{
    return m_bValid;
}

CFX_WideString & CJS_EventHandler::Change()
{
    if (m_pWideStrChange) {
        return *m_pWideStrChange;
    }
    return m_WideStrChangeDu;
}

CFX_WideString CJS_EventHandler::ChangeEx()
{
    return m_WideStrChangeEx;
}

int CJS_EventHandler::CommitKey()
{
    return m_nCommitKey;
}

FX_BOOL CJS_EventHandler::FieldFull()
{
    return m_bFieldFull;
}

FX_BOOL CJS_EventHandler::KeyDown()
{
    return m_bKeyDown;
}

FX_BOOL CJS_EventHandler::Modifier()
{
    return m_bModifier;
}

const FX_WCHAR* CJS_EventHandler::Name()
{
    switch (m_eEventType)
    {
    case JET_APP_INIT:          return L"Init";
    case JET_BATCH_EXEC:        return L"Exec";
    case JET_BOOKMARK_MOUSEUP:  return L"Mouse Up";
    case JET_CONSOLE_EXEC:      return L"Exec";
    case JET_DOC_DIDPRINT:      return L"DidPrint";
    case JET_DOC_DIDSAVE:       return L"DidSave";
    case JET_DOC_OPEN:          return L"Open";
    case JET_DOC_WILLCLOSE:     return L"WillClose";
    case JET_DOC_WILLPRINT:     return L"WillPrint";
    case JET_DOC_WILLSAVE:      return L"WillSave";
    case JET_EXTERNAL_EXEC:     return L"Exec";
    case JET_FIELD_FOCUS:
    case JET_SCREEN_FOCUS:      return L"Focus";
    case JET_FIELD_BLUR:
    case JET_SCREEN_BLUR:       return L"Blur";
    case JET_FIELD_MOUSEDOWN:
    case JET_SCREEN_MOUSEDOWN:  return L"Mouse Down";
    case JET_FIELD_MOUSEUP:
    case JET_SCREEN_MOUSEUP:    return L"Mouse Up";
    case JET_FIELD_MOUSEENTER:
    case JET_SCREEN_MOUSEENTER: return L"Mouse Enter";
    case JET_FIELD_MOUSEEXIT:
    case JET_SCREEN_MOUSEEXIT:  return L"Mouse Exit";
    case JET_FIELD_CALCULATE:   return L"Calculate";
    case JET_FIELD_FORMAT:      return L"Format";
    case JET_FIELD_KEYSTROKE:   return L"Keystroke";
    case JET_FIELD_VALIDATE:    return L"Validate";
    case JET_LINK_MOUSEUP:      return L"Mouse Up";
    case JET_MENU_EXEC:         return L"Exec";
    case JET_PAGE_OPEN:
    case JET_SCREEN_OPEN:       return L"Open";
    case JET_PAGE_CLOSE:
    case JET_SCREEN_CLOSE:      return L"Close";
    case JET_SCREEN_INVIEW:
    case JET_PAGE_INVIEW:       return L"InView";
    case JET_PAGE_OUTVIEW:
    case JET_SCREEN_OUTVIEW:    return L"OutView";
    default:
        return L"";
    }

    return L"";
}

const FX_WCHAR* CJS_EventHandler::Type()
{
    switch (m_eEventType)
    {
    case JET_APP_INIT:          return L"App";
    case JET_BATCH_EXEC:        return L"Batch";
    case JET_BOOKMARK_MOUSEUP:  return L"BookMark";
    case JET_CONSOLE_EXEC:      return L"Console";
    case JET_DOC_DIDPRINT:
    case JET_DOC_DIDSAVE:
    case JET_DOC_OPEN:
    case JET_DOC_WILLCLOSE:
    case JET_DOC_WILLPRINT:
    case JET_DOC_WILLSAVE:      return L"Doc";
    case JET_EXTERNAL_EXEC:     return L"External";
    case JET_FIELD_BLUR:
    case JET_FIELD_FOCUS:
    case JET_FIELD_MOUSEDOWN:
    case JET_FIELD_MOUSEENTER:
    case JET_FIELD_MOUSEEXIT:
    case JET_FIELD_MOUSEUP:
    case JET_FIELD_CALCULATE:
    case JET_FIELD_FORMAT:
    case JET_FIELD_KEYSTROKE:
    case JET_FIELD_VALIDATE:    return L"Field";
    case JET_SCREEN_FOCUS:
    case JET_SCREEN_BLUR:
    case JET_SCREEN_OPEN:
    case JET_SCREEN_CLOSE:
    case JET_SCREEN_MOUSEDOWN:
    case JET_SCREEN_MOUSEUP:
    case JET_SCREEN_MOUSEENTER:
    case JET_SCREEN_MOUSEEXIT:
    case JET_SCREEN_INVIEW:
    case JET_SCREEN_OUTVIEW:    return L"Screen";
    case JET_LINK_MOUSEUP:      return L"Link";
    case JET_MENU_EXEC:         return L"Menu";
    case JET_PAGE_OPEN:
    case JET_PAGE_CLOSE:
    case JET_PAGE_INVIEW:
    case JET_PAGE_OUTVIEW:return L"Page";
    default:
        return L"";
    }

    return L"";
}

FX_BOOL& CJS_EventHandler::Rc()
{
    if (m_pbRc) {
        return *m_pbRc;
    }
    return m_bRcDu;
}

int & CJS_EventHandler::SelEnd()
{
    if (m_pISelEnd) {
        return *m_pISelEnd;
    }
    return m_nSelEndDu;
}

int & CJS_EventHandler::SelStart()
{
    if (m_pISelStart) {
        return *m_pISelStart;
    }
    return m_nSelStartDu;
}

FX_BOOL CJS_EventHandler::Shift()
{
    return m_bShift;
}

Field* CJS_EventHandler::Source()
{
    ASSERT(m_pJSContext != NULL);

    CJS_Runtime* pRuntime = m_pJSContext->GetJSRuntime();

    JSFXObject  pDocObj = JS_NewFxDynamicObj(*pRuntime, m_pJSContext, JS_GetObjDefnID(*pRuntime, L"Document"));
    ASSERT(pDocObj.IsEmpty() == FALSE);
    JSFXObject  pFieldObj = JS_NewFxDynamicObj(*pRuntime, m_pJSContext, JS_GetObjDefnID(*pRuntime, L"Field"));
    ASSERT(pFieldObj.IsEmpty() == FALSE);

    CJS_Document* pJSDocument = (CJS_Document*)JS_GetPrivate(pDocObj);
    ASSERT(pJSDocument != NULL);
    Document* pDocument = (Document*)pJSDocument->GetEmbedObject();
    ASSERT(pDocument != NULL);
    if (m_pTargetDoc != NULL)
        pDocument->AttachDoc(m_pTargetDoc);
    else
        pDocument->AttachDoc(m_pJSContext->GetReaderDocument());

    //if (m_pSourceField == NULL)
    //  return NULL;
    //CRAO_Widget *pWidget = IBCL_Widget::GetWidget(m_pSourceField);
    //CPDF_FormField* pFormField = pWidget->GetFormField();
    //ASSERT(pFormField);
    //CFX_WideString csFieldName = pFormField->GetFullName();
    CJS_Field * pJSField = (CJS_Field*)JS_GetPrivate(pFieldObj);
    ASSERT(pJSField != NULL);
    Field * pField = (Field *)pJSField->GetEmbedObject();
    ASSERT(pField != NULL);
    pField->AttachField(pDocument, m_strSourceName);
    return pField;
}

Field* CJS_EventHandler::Target_Field()
{
    ASSERT(m_pJSContext != NULL);

    CJS_Runtime* pRuntime = m_pJSContext->GetJSRuntime();

    JSFXObject pDocObj = JS_NewFxDynamicObj(*pRuntime, m_pJSContext, JS_GetObjDefnID(*pRuntime, L"Document"));
    ASSERT(pDocObj.IsEmpty() == FALSE);
    JSFXObject pFieldObj = JS_NewFxDynamicObj(*pRuntime, m_pJSContext, JS_GetObjDefnID(*pRuntime, L"Field"));
    ASSERT(pFieldObj.IsEmpty() == FALSE);

    CJS_Document* pJSDocument = (CJS_Document*)JS_GetPrivate(pDocObj);
    ASSERT(pJSDocument != NULL);
    Document* pDocument = (Document*)pJSDocument->GetEmbedObject();
    ASSERT(pDocument != NULL);
    if (m_pTargetDoc != NULL)
        pDocument->AttachDoc(m_pTargetDoc);
    else
        pDocument->AttachDoc(m_pJSContext->GetReaderDocument());

    CJS_Field* pJSField = (CJS_Field*)JS_GetPrivate(pFieldObj);
    ASSERT(pJSField != NULL);

    Field* pField = (Field *)pJSField->GetEmbedObject();
    ASSERT(pField != NULL);

    pField->AttachField(pDocument, m_strTargetName);
    return pField;
}

CFX_WideString& CJS_EventHandler::Value()
{
    return *m_pValue;
}

FX_BOOL CJS_EventHandler::WillCommit()
{
    return m_bWillCommit;
}

CFX_WideString CJS_EventHandler::TargetName()
{
    return m_strTargetName;
}