port of nils bugfix from trunk rev 602

git-svn-id: http://cpunk.de/svn/src/gpg4usb/branches/0.3.1@609 34ebc366-c3a9-4b3c-9f84-69acf7962910

4 files changed, 85 insertions, 2 deletions

diff --git a/gpgwin.cpp b/gpgwin.cpp
index dac830d..c30877b 100644
--- a/gpgwin.cpp
+++ b/gpgwin.cpp
@@ -612,6 +612,10 @@ void GpgWin::openKeyManagement()
 
 void GpgWin::encrypt()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     QStringList *uidList = mKeyList->getChecked();
 
     QByteArray *tmp = new QByteArray();
@@ -623,6 +627,10 @@ void GpgWin::encrypt()
 
 void GpgWin::sign()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     QStringList *uidList = mKeyList->getPrivateChecked();
 
     QByteArray *tmp = new QByteArray();
@@ -635,6 +643,10 @@ void GpgWin::sign()
 
 void GpgWin::decrypt()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     QByteArray *decrypted = new QByteArray();
     QByteArray text = edit->curTextPage()->toPlainText().toAscii(); // TODO: toUtf8() here?
     mCtx->preventNoDataErr(&text);
@@ -670,6 +682,10 @@ void GpgWin::decrypt()
 
 void GpgWin::verify()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     // At first close verifynotification, if existing
     edit->curPage()->closeNoteByClass("verifyNotification");
 
@@ -728,6 +744,10 @@ void GpgWin::importKeyDialog()
  */
 void GpgWin::appendSelectedKeys()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     QByteArray *keyArray = new QByteArray();
     mCtx->exportKeys(mKeyList->getSelected(), keyArray);
     edit->curTextPage()->appendPlainText(*keyArray);
@@ -735,6 +755,10 @@ void GpgWin::appendSelectedKeys()
 
 void GpgWin::copyMailAddressToClipboard()
 {
+    if (mKeyList->getSelected()->isEmpty()) {
+        return;
+    }
+
     gpgme_key_t key = mCtx->getKeyDetails(mKeyList->getSelected()->first());
     QClipboard *cb = QApplication::clipboard();
     QString mail = key->uids->email;
@@ -743,9 +767,14 @@ void GpgWin::copyMailAddressToClipboard()
 
 void GpgWin::showKeyDetails()
 {
-    // TODO: first...?
+    if (mKeyList->getSelected()->isEmpty()) {
+        return;
+    }
+
     gpgme_key_t key = mCtx->getKeyDetails(mKeyList->getSelected()->first());
-    new KeyDetailsDialog(mCtx, key, this);
+    if (key) {
+        new KeyDetailsDialog(mCtx, key, this);
+    }
 }
 
 void GpgWin::fileEncryption()
@@ -776,6 +805,10 @@ void GpgWin::openSettingsDialog()
 
 void GpgWin::cleanDoubleLinebreaks()
 {
+    if (edit->tabCount()==0) {
+        return;
+    }
+
     QString content = edit->curTextPage()->toPlainText();
     content.replace("\n\n", "\n");
     edit->fillTextEditWithText(content);
diff --git a/keymgmt.cpp b/keymgmt.cpp
index 451eaf7..7b58583 100755
--- a/keymgmt.cpp
+++ b/keymgmt.cpp
@@ -214,6 +214,10 @@ void KeyMgmt::deleteKeysWithWarning(QStringList *uidList)
 
 void KeyMgmt::showKeyDetails()
 {
+    if (mKeyList->getSelected()->isEmpty()) {
+        return;
+    }
+
     // TODO: first...?
     gpgme_key_t key = mCtx->getKeyDetails(mKeyList->getSelected()->first());
 
diff --git a/textedit.cpp b/textedit.cpp
index 57a91e9..b60c28d 100644
--- a/textedit.cpp
+++ b/textedit.cpp
@@ -89,6 +89,10 @@ void TextEdit::open()
 
 void TextEdit::save()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     QString fileName = curPage()->getFilePath();
 
     if (fileName.isEmpty()) {
@@ -137,6 +141,10 @@ bool TextEdit::saveFile(const QString &fileName)
 
 bool TextEdit::saveAs()
 {
+    if (tabWidget->count() == 0) {
+        return true;
+    }
+
     EditorPage *page = curPage();
     QString path;
     if(page->getFilePath() != "") {
@@ -296,6 +304,11 @@ QPlainTextEdit* TextEdit::curTextPage()
 }
 
 
+int TextEdit::tabCount()
+{
+    return tabWidget->count();
+}
+
 EditorPage* TextEdit::curPage()
 {
     EditorPage *curPage = qobject_cast<EditorPage *>(tabWidget->currentWidget());
@@ -304,6 +317,10 @@ EditorPage* TextEdit::curPage()
 
 void TextEdit::quote()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     QTextCursor cursor(curTextPage()->document());
 
     // beginEditBlock and endEditBlock() let operation look like single undo/redo operation
@@ -355,6 +372,10 @@ QString TextEdit::strippedName(const QString &fullFileName)
 
 void TextEdit::print()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
 #ifndef QT_NO_PRINTER
     QTextDocument *document = curTextPage()->document();
     QPrinter printer;
@@ -415,31 +436,55 @@ QHash<int, QString> TextEdit::unsavedDocuments() {
 
 void TextEdit::cut()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->cut();
 }
 
 void TextEdit::copy()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->copy();
 }
 
 void TextEdit::paste()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->paste();
 }
 
 void TextEdit::undo()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->undo();
 }
 
 void TextEdit::redo()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->redo();
 }
 
 void TextEdit::selectAll()
 {
+    if (tabWidget->count() == 0) {
+        return;
+    }
+
     curTextPage()->selectAll();
 }
 
diff --git a/textedit.h b/textedit.h
index 0f91f86..0ae2689 100644
--- a/textedit.h
+++ b/textedit.h
@@ -73,6 +73,7 @@ public:
      */
     bool maybeSaveAnyTab();
 
+    int tabCount();
     /**
      * @details textpage of the currently activated tab
      */