WIP: create namespace, delete key.

src/qt/forms/kevadialog.ui

@@ -227,7 +227,7 @@
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout_2">
         <item>
-         <widget class="QPushButton" name="showRequestButton">
+         <widget class="QPushButton" name="showValueButton">
           <property name="enabled">
            <bool>false</bool>
           </property>
@@ -247,7 +247,7 @@
          </widget>
         </item>
         <item>
-         <widget class="QPushButton" name="removeRequestButton">
+         <widget class="QPushButton" name="removeButton">
           <property name="enabled">
            <bool>false</bool>
           </property>
@@ -295,15 +295,12 @@
   </customwidget>
  </customwidgets>
  <tabstops>
-  <tabstop>reqLabel</tabstop>
-  <tabstop>reqAmount</tabstop>
-  <tabstop>useBech32</tabstop>
   <tabstop>reqMessage</tabstop>
   <tabstop>receiveButton</tabstop>
   <tabstop>clearButton</tabstop>
   <tabstop>recentRequestsView</tabstop>
-  <tabstop>showRequestButton</tabstop>
-  <tabstop>removeRequestButton</tabstop>
+  <tabstop>showValueButton</tabstop>
+  <tabstop>removeButton</tabstop>
  </tabstops>
  <resources>
   <include location="../bitcoin.qrc"/>

src/qt/kevadialog.cpp

@@ -38,12 +38,12 @@ KevaDialog::KevaDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
 
     if (!_platformStyle->getImagesOnButtons()) {
         ui->receiveButton->setIcon(QIcon());
-        ui->showRequestButton->setIcon(QIcon());
-        ui->removeRequestButton->setIcon(QIcon());
+        ui->showValueButton->setIcon(QIcon());
+        ui->removeButton->setIcon(QIcon());
     } else {
         ui->receiveButton->setIcon(_platformStyle->SingleColorIcon(":/icons/address-book"));
-        ui->showRequestButton->setIcon(_platformStyle->SingleColorIcon(":/icons/edit"));
-        ui->removeRequestButton->setIcon(_platformStyle->SingleColorIcon(":/icons/remove"));
+        ui->showValueButton->setIcon(_platformStyle->SingleColorIcon(":/icons/edit"));
+        ui->removeButton->setIcon(_platformStyle->SingleColorIcon(":/icons/remove"));
     }
 
     // context menu actions
@@ -65,7 +65,6 @@ KevaDialog::KevaDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
     connect(copyMessageAction, SIGNAL(triggered()), this, SLOT(copyMessage()));
     connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
-
 }
 
 void KevaDialog::setModel(WalletModel *_model)
@@ -87,9 +86,9 @@ void KevaDialog::setModel(WalletModel *_model)
         tableView->setColumnWidth(KevaTableModel::Key, KEY_COLUMN_WIDTH);
         tableView->setColumnWidth(KevaTableModel::Block, BLOCK_MINIMUM_COLUMN_WIDTH);
 
-        connect(tableView->selectionModel(),
-            SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this,
-            SLOT(recentRequestsView_selectionChanged(QItemSelection, QItemSelection)));
+        connect(ui->kevaView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
+                this, SLOT(kevaView_selectionChanged()));
+
         // Last 2 columns are set by the columnResizingFixer, when the table geometry is ready.
         columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(tableView, BLOCK_MINIMUM_COLUMN_WIDTH, DATE_COLUMN_WIDTH, this);
     }
@@ -182,15 +181,15 @@ void KevaDialog::on_kevaView_doubleClicked(const QModelIndex &index)
     dialog->show();
 }
 
-void KevaDialog::kevaView_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
+void KevaDialog::kevaView_selectionChanged()
 {
     // Enable Show/Remove buttons only if anything is selected.
     bool enable = !ui->kevaView->selectionModel()->selectedRows().isEmpty();
-    ui->showRequestButton->setEnabled(enable);
-    ui->removeRequestButton->setEnabled(enable);
+    ui->showValueButton->setEnabled(enable);
+    ui->removeButton->setEnabled(enable);
 }
 
-void KevaDialog::on_showRequestButton_clicked()
+void KevaDialog::on_showValueButton_clicked()
 {
     if(!model || !model->getKevaTableModel() || !ui->kevaView->selectionModel())
         return;
@@ -201,16 +200,33 @@ void KevaDialog::on_showRequestButton_clicked()
     }
 }
 
-void KevaDialog::on_removeRequestButton_clicked()
+void KevaDialog::on_removeButton_clicked()
 {
     if(!model || !model->getKevaTableModel() || !ui->kevaView->selectionModel())
         return;
     QModelIndexList selection = ui->kevaView->selectionModel()->selectedRows();
     if(selection.empty())
         return;
-    // correct for selection mode ContiguousSelection
-    QModelIndex firstIndex = selection.at(0);
-    model->getKevaTableModel()->removeRows(firstIndex.row(), selection.length(), firstIndex.parent());
+
+    QMessageBox::StandardButton reply;
+    QModelIndex index = selection.at(0);
+    QModelIndex keyIdx = index.sibling(index.row(), KevaTableModel::Key);
+    QString keyStr = keyIdx.data(Qt::DisplayRole).toString();
+    reply = QMessageBox::warning(this, tr("Warning"), tr("Delete the key \"%1\"?").arg(keyStr),
+                                QMessageBox::Cancel|QMessageBox::Ok);
+
+    if (reply == QMessageBox::Cancel) {
+        return;
+    }
+
+    std::string nameSpace = ui->nameSpace->text().toStdString();
+    std::string key = keyStr.toStdString();
+
+    if (this->model->deleteKevaEntry(nameSpace, key)) {
+        // correct for selection mode ContiguousSelection
+        QModelIndex firstIndex = selection.at(0);
+        model->getKevaTableModel()->removeRows(firstIndex.row(), selection.length(), firstIndex.parent());
+    }
 }
 
 // We override the virtual resizeEvent of the QWidget to adjust tables column
@@ -300,3 +316,17 @@ void KevaDialog::copyAmount()
 {
     copyColumnToClipboard(KevaTableModel::Block);
 }
+
+
+int KevaDialog::createNamespace(std::string displayName, std::string& namespaceId)
+{
+    if (!this->model) {
+        return 0;
+    }
+
+    if (!this->model->createNamespace(displayName, namespaceId)) {
+        // TODO: show error message.
+        return 1;
+    }
+    return 1;
+}

src/qt/kevadialog.h

@@ -44,6 +44,7 @@ public:
 
     void setModel(WalletModel *model);
     void showNamespace(QString ns);
+    int createNamespace(std::string displayName, std::string& namespaceId);
 
 public Q_SLOTS:
     void clear();
@@ -68,10 +69,10 @@ private Q_SLOTS:
     void on_showContent_clicked();
     void on_createNamespace_clicked();
     void on_listNamespaces_clicked();
-    void on_showRequestButton_clicked();
-    void on_removeRequestButton_clicked();
+    void on_showValueButton_clicked();
+    void on_removeButton_clicked();
     void on_kevaView_doubleClicked(const QModelIndex &index);
-    void kevaView_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
+    void kevaView_selectionChanged();
     void updateDisplayUnit();
     void showMenu(const QPoint &point);
     void copyURI();

src/qt/kevanamespacemodel.cpp

@@ -105,10 +105,14 @@ bool KevaNamespaceModel::removeRows(int row, int count, const QModelIndex &paren
 
 Qt::ItemFlags KevaNamespaceModel::flags(const QModelIndex &index) const
 {
-    return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
+    const NamespaceEntry *rec = &list[index.row()];
+    if (rec->confirmed) {
+        return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
+    } else {
+        return Qt::ItemIsSelectable;
+    }
 }
 
-
 // actually add to table in GUI
 void KevaNamespaceModel::setNamespace(std::vector<NamespaceEntry> vNamespaceEntries)
 {

src/qt/kevanamespacemodel.h

@@ -16,10 +16,11 @@ class CWallet;
 class NamespaceEntry
 {
 public:
-    NamespaceEntry() { }
+    NamespaceEntry():confirmed(true) { }
 
     std::string id;
     std::string name;
+    bool confirmed;
 };
 
 class NamespaceEntryLessThan

src/qt/kevanewnamespacedialog.cpp

@@ -6,7 +6,9 @@
 #include <qt/forms/ui_kevanewnamespacedialog.h>
 
 #include <qt/kevatablemodel.h>
+#include <qt/kevadialog.h>
 
+#include <QPushButton>
 #include <QModelIndex>
 
 KevaNewNamespaceDialog::KevaNewNamespaceDialog(QWidget *parent) :
@@ -14,14 +16,36 @@ KevaNewNamespaceDialog::KevaNewNamespaceDialog(QWidget *parent) :
     ui(new Ui::KevaNewNamespaceDialog)
 {
     ui->setupUi(this);
+    connect(ui->buttonBox->button(QDialogButtonBox::Cancel), SIGNAL(clicked()), this, SLOT(reject()));
+    connect(ui->buttonBox->button(QDialogButtonBox::Save), SIGNAL(clicked()), this, SLOT(accept()));
+    connect(ui->namespaceText, SIGNAL(textChanged(const QString &)), this, SLOT(onNamespaceChanged(const QString &)));
+    ui->buttonBox->button(QDialogButtonBox::Save)->setEnabled(false);
+}
+
+void KevaNewNamespaceDialog::onNamespaceChanged(const QString & ns)
+{
+    int length = ns.length();
+    bool enabled = length > 0;
+    ui->buttonBox->button(QDialogButtonBox::Save)->setEnabled(enabled);
 }
 
 void KevaNewNamespaceDialog::accept()
 {
-    // Create the namespace here.
+    KevaDialog* dialog = (KevaDialog*)this->parentWidget();
+    QString nsText  = ui->namespaceText->text();
+    std::string namespaceId;
+    if (!dialog->createNamespace(nsText.toStdString(), namespaceId)) {
+        //TODO: error message.
+        return;
+    }
+    dialog->showNamespace(QString::fromStdString(namespaceId));
     QDialog::accept();
 }
 
+void KevaNewNamespaceDialog::reject()
+{
+}
+
 KevaNewNamespaceDialog::~KevaNewNamespaceDialog()
 {
     delete ui;

src/qt/kevanewnamespacedialog.h

@@ -26,6 +26,8 @@ public:
 
 public Q_SLOTS:
     void accept();
+    void reject();
+    void onNamespaceChanged(const QString & ns);
 
 private:
     Ui::KevaNewNamespaceDialog *ui;

src/qt/walletmodel.cpp

@@ -40,6 +40,8 @@
 #include <QSet>
 #include <QTimer>
 
+const int NAMESPACE_LENGTH           =  21;
+const std::string DUMMY_NAMESPACE    =  "___DUMMY_NAMESPACE___";
 
 WalletModel::WalletModel(const PlatformStyle *platformStyle, CWallet *_wallet, OptionsModel *_optionsModel, QObject *parent) :
     QObject(parent), wallet(_wallet), optionsModel(_optionsModel), addressTableModel(0),
@@ -764,9 +766,27 @@ int WalletModel::getDefaultConfirmTarget() const
 
 void WalletModel::getKevaEntries(std::vector<KevaEntry>& vKevaEntries, std::string nameSpace)
 {
+    valtype nameSpaceVal = ValtypeFromString(nameSpace);
+
+    {
+        // Get the unconfirmed namespaces and list them at the beginning.
+        LOCK (mempool.cs);
+
+        std::vector<std::tuple<valtype, valtype, valtype, uint256>> unconfirmedKeyValueList;
+        mempool.getUnconfirmedKeyValueList(unconfirmedKeyValueList, nameSpaceVal);
+
+        for (auto e : unconfirmedKeyValueList) {
+            KevaEntry entry;
+            entry.key = ValtypeToString(std::get<1>(e));
+            entry.value = ValtypeToString(std::get<2>(e));
+            entry.block = -1; // Unconfirmed.
+            entry.date = QDateTime();
+            vKevaEntries.push_back(std::move(entry));
+        }
+    }
+
     LOCK(cs_main);
 
-    valtype nameSpaceVal = ValtypeFromString(nameSpace);
     valtype key;
     CKevaData data;
     std::unique_ptr<CKevaIterator> iter(pcoinsTip->IterateKeys(nameSpaceVal));
@@ -783,6 +803,7 @@ void WalletModel::getKevaEntries(std::vector<KevaEntry>& vKevaEntries, std::stri
         }
         vKevaEntries.push_back(std::move(entry));
     }
+
 }
 
 void WalletModel::getNamespaceEntries(std::vector<NamespaceEntry>& vNamespaceEntries)
@@ -833,6 +854,23 @@ void WalletModel::getNamespaceEntries(std::vector<NamespaceEntry>& vNamespaceEnt
         }
     }
 
+    {
+        // Also get the unconfirmed namespaces and list them at the beginning.
+        LOCK (mempool.cs);
+
+        std::vector<std::tuple<valtype, valtype, uint256>> unconfirmedNamespaces;
+        mempool.getUnconfirmedNamespaceList(unconfirmedNamespaces);
+
+        for (auto ns: unconfirmedNamespaces) {
+            NamespaceEntry entry;
+            entry.id = ValtypeToString(std::get<0>(ns));
+            entry.name = ValtypeToString(std::get<1>(ns));
+            entry.confirmed = false;
+            vNamespaceEntries.push_back(std::move(entry));
+        }
+    }
+
+    // The confirmed namespaces.
     std::map<std::string, std::string>::iterator it = mapObjects.begin();
 	while (it != mapObjects.end()) {
         NamespaceEntry entry;
@@ -842,3 +880,105 @@ void WalletModel::getNamespaceEntries(std::vector<NamespaceEntry>& vNamespaceEnt
 		it++;
 	}
 }
+
+
+int WalletModel::createNamespace(std::string displayNameStr, std::string& namespaceId)
+{
+    const valtype displayName = ValtypeFromString (displayNameStr);
+    if (displayName.size() > MAX_NAMESPACE_LENGTH) {
+        return 0;
+    }
+
+    CReserveKey keyName(wallet);
+    CPubKey pubKey;
+    const bool ok = keyName.GetReservedKey(pubKey, true);
+    assert(ok);
+
+    CKeyID keyId = pubKey.GetID();
+
+    // The namespace name is: Hash160("first txin")
+    // For now we don't know the first txin, so use dummy name here.
+    // It will be replaced later in CreateTransaction.
+    valtype namespaceDummy = ToByteVector(std::string(DUMMY_NAMESPACE));
+    assert(namespaceDummy.size() == NAMESPACE_LENGTH);
+
+    CScript redeemScript = GetScriptForDestination(WitnessV0KeyHash(keyId));
+    CScriptID scriptHash = CScriptID(redeemScript);
+    CScript addrName = GetScriptForDestination(scriptHash);
+    const CScript newScript = CKevaScript::buildKevaNamespace(addrName, namespaceDummy, displayName);
+
+    CCoinControl coinControl;
+    CWalletTx wtx;
+    valtype kevaNamespace;
+    SendMoneyToScript(wallet, newScript, nullptr, kevaNamespace,
+        KEVA_LOCKED_AMOUNT, false, wtx, coinControl);
+    keyName.KeepKey();
+
+    namespaceId = EncodeBase58Check(kevaNamespace);
+    return 1;
+}
+
+
+int WalletModel::deleteKevaEntry(std::string namespaceStr, std::string keyStr)
+{
+    valtype nameSpace;
+    if (!DecodeKevaNamespace(namespaceStr, Params(), nameSpace)) {
+        //TODO: show error message.
+        return 0;
+    }
+
+    const valtype key = ValtypeFromString(keyStr);
+    if (key.size() > MAX_KEY_LENGTH) {
+        //TODO: show error message.
+        return 0;
+    }
+
+    bool hasKey = false;
+    CKevaData data;
+    {
+        LOCK2(cs_main, mempool.cs);
+        std::vector<std::tuple<valtype, valtype, valtype, uint256>> unconfirmedKeyValueList;
+        valtype val;
+        if (mempool.getUnconfirmedKeyValue(nameSpace, key, val)) {
+            if (val.size() > 0) {
+                hasKey = true;
+            }
+        } else if (pcoinsTip->GetName(nameSpace, key, data)) {
+            hasKey = true;
+        }
+    }
+
+    if (!hasKey) {
+        //TODO: show error message.
+        return 0;
+    }
+
+    COutput output;
+    std::string kevaNamespce = namespaceStr;
+    if (!wallet->FindKevaCoin(output, kevaNamespce)) {
+        // TODO: This namespace can not be updated
+        return 0;
+    }
+    const COutPoint outp(output.tx->GetHash(), output.i);
+    const CTxIn txIn(outp);
+
+    CReserveKey keyName(wallet);
+    CPubKey pubKeyReserve;
+    const bool ok = keyName.GetReservedKey(pubKeyReserve, true);
+    assert(ok);
+
+    CScript redeemScript = GetScriptForDestination(WitnessV0KeyHash(pubKeyReserve.GetID()));
+    CScriptID scriptHash = CScriptID(redeemScript);
+    CScript addrName = GetScriptForDestination(scriptHash);
+
+    const CScript kevaScript = CKevaScript::buildKevaDelete(addrName, nameSpace, key);
+
+    CCoinControl coinControl;
+    CWalletTx wtx;
+    valtype empty;
+    SendMoneyToScript(wallet, kevaScript, &txIn, empty,
+        KEVA_LOCKED_AMOUNT, false, wtx, coinControl);
+
+    keyName.KeepKey();
+    return 1;
+}

src/qt/walletmodel.h

@@ -229,6 +229,8 @@ public:
     // Keva
     void getKevaEntries(std::vector<KevaEntry>& vKevaEntries, std::string nameSpace);
     void getNamespaceEntries(std::vector<NamespaceEntry>& vNamespaceEntries);
+    int createNamespace(std::string displayName, std::string& namespaceId);
+    int deleteKevaEntry(std::string nameSpace, std::string key);
 
 private:
     CWallet *wallet;