view/aaSessionHistory.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent tw=79 ft=cpp: */
   3 /*
   4  * Copyright (C) 2007 Sergey Yanovich <ynvich@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <abstract/aacore.h>
  23
  24 #include "nsCOMPtr.h"
  25 #include "nsISHistory.h"
  26 #include "nsComponentManagerUtils.h"
  27 #include "nsMemory.h"
  28 #include "nsIClassInfoImpl.h"
  29
  30 /* Unfrozen API */
  31 #include "unstable/nsISHistoryInternal.h"
  32 #include "unstable/nsIWebNavigation.h"
  33
  34 /* Project includes */
  35 #include <abstract/storage/aaISession.h>
  36 #include <abstract/view/aaISHistory.h>
  37 #include <abstract/view/aaIPageView.h>
  38 #include "aaSessionHistory.h"
  39
  40 aaSessionHistory::aaSessionHistory()
  41   :mChoosing(PR_FALSE)
  42 {
  43   mSH = do_CreateInstance(NS_SHISTORY_CONTRACTID);
  44   if (!mSH)
  45     return;
  46   mSHI = do_QueryInterface(mSH);
  47   if (!mSHI)
  48     return;
  49   mWN = do_QueryInterface(mSH);
  50   if (!mWN)
  51     return;
  52   mSession = do_CreateInstance("@aasii.org/storage/session;1");
  53 }
  54
  55 aaSessionHistory::~aaSessionHistory()
  56 {
  57 }
  58
  59 NS_IMPL_ISUPPORTS5_CI(aaSessionHistory,
  60                       nsISHistory,
  61                       nsISHistoryInternal,
  62                       nsIWebNavigation,
  63                       aaISHistory,
  64                       aaISession)
  65
  66 /* nsISHistoryInternal */
  67 NS_IMETHODIMP
  68 aaSessionHistory::AddEntry(nsISHEntry *aEntry, PRBool aPersist)
  69 {
  70   nsCOMPtr<aaIPageView> pageView( do_CreateInstance(
  71         "@aasii.org/view/page-view;1", aEntry));
  72   pageView->SetChoosing(mChoosing);
  73   if (mChoosing)
  74     mChoosing = PR_FALSE;
  75   return mSHI->AddEntry(pageView, aPersist);
  76 }
  77
  78 NS_IMETHODIMP
  79 aaSessionHistory::GetRootTransaction(nsISHTransaction * *aRootTransaction)
  80 {
  81   return mSHI->GetRootTransaction(aRootTransaction);
  82 }
  83
  84 NS_IMETHODIMP
  85 aaSessionHistory::GetRootDocShell(nsIDocShell * *aRootDocShell)
  86 {
  87   return mSHI->GetRootDocShell( aRootDocShell );
  88 }
  89 NS_IMETHODIMP
  90 aaSessionHistory::SetRootDocShell(nsIDocShell * aRootDocShell)
  91 {
  92   return mSHI->SetRootDocShell( aRootDocShell );
  93 }
  94
  95 NS_IMETHODIMP
  96 aaSessionHistory::UpdateIndex()
  97 {
  98   return mSHI->UpdateIndex();
  99 }
 100
 101 NS_IMETHODIMP
 102 aaSessionHistory::ReplaceEntry(PRInt32 aIndex, nsISHEntry *aReplaceEntry)
 103 {
 104   return mSHI->ReplaceEntry(aIndex, aReplaceEntry);
 105 }
 106
 107 NS_IMETHODIMP
 108 aaSessionHistory::GetListener(nsISHistoryListener * *aListener)
 109 {
 110   return mSHI->GetListener(aListener);
 111 }
 112
 113 NS_IMETHODIMP
 114 aaSessionHistory::EvictContentViewers(PRInt32 previousIndex, PRInt32 index)
 115 {
 116   return mSHI->EvictContentViewers(previousIndex, index);
 117 }
 118
 119 NS_IMETHODIMP
 120 aaSessionHistory::EvictExpiredContentViewerForEntry(nsISHEntry *aEntry)
 121 {
 122   return mSHI->EvictExpiredContentViewerForEntry(aEntry);
 123 }
 124
 125 /* aaISHistory */
 126 NS_IMETHODIMP
 127 aaSessionHistory::GetChoosing(PRBool *aChoosing)
 128 {
 129   nsresult rv;
 130   nsCOMPtr<aaIPageView> pv1 = getter_AddRefs( getDestination(0, rv) );
 131   NS_ENSURE_TRUE(pv1, rv);
 132
 133   return pv1->GetChoosing(aChoosing);
 134 }
 135
 136 NS_IMETHODIMP
 137 aaSessionHistory::BeginQuery()
 138 {
 139   if ( mChoosing )
 140     return NS_ERROR_ALREADY_INITIALIZED;
 141   mChoosing = PR_TRUE;
 142   return NS_OK;
 143 }
 144
 145 NS_IMETHODIMP
 146 aaSessionHistory::GetQueryBuffer(nsISupports * *aQueryBuffer)
 147 {
 148   nsresult rv;
 149   nsCOMPtr<aaIPageView> pv1 = getter_AddRefs( getDestination(0, rv) );
 150   NS_ENSURE_TRUE(pv1, rv);
 151
 152   return pv1->GetQueryChoice(aQueryBuffer);
 153 }
 154
 155 NS_IMETHODIMP
 156 aaSessionHistory::GetChoice(nsISupports * *aChoice)
 157 {
 158   nsresult rv;
 159   nsCOMPtr<aaIPageView> pv0 = getter_AddRefs( getDestination(-1, rv) );
 160   NS_ENSURE_TRUE(pv0, rv);
 161
 162   return pv0->GetQueryChoice(aChoice);
 163 }
 164 NS_IMETHODIMP
 165 aaSessionHistory::SetChoice(nsISupports * aChoice)
 166 {
 167   nsresult rv;
 168   nsCOMPtr<aaIPageView> pv0 = getter_AddRefs( getDestination(-1, rv) );
 169   NS_ENSURE_TRUE(pv0, rv);
 170
 171   return pv0->SetQueryChoice(aChoice);
 172 }
 173
 174 /* Private methods */
 175 aaIPageView *
 176 aaSessionHistory::getDestination(PRInt32 offset, nsresult &rv)
 177 {
 178   PRInt32 index;
 179   rv = mSH->GetIndex(&index);
 180   NS_ENSURE_SUCCESS(rv, nsnull);
 181
 182   nsCOMPtr<nsIHistoryEntry> he0;
 183   rv = mSH->GetEntryAtIndex(index + offset, PR_FALSE, getter_AddRefs( he0 ));
 184   NS_ENSURE_SUCCESS(rv, nsnull);
 185
 186   aaIPageView *pv0;
 187   rv = CallQueryInterface(he0, &pv0);
 188   return pv0;
 189 }