doc/examples/addressbook-sdk/part5/addressbook.cpp

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  38
  39 #include "addressbook.h"
  40 #include "ui_addressbook.h"
  41
  42 AddressBook::AddressBook(QWidget *parent)
  43     : QWidget(parent), ui(new Ui::AddressBook)
  44 {
  45     ui->setupUi(this);
  46
  47     ui->nameLine->setReadOnly(true);
  48     ui->addressText->setReadOnly(true);
  49     ui->submitButton->hide();
  50     ui->cancelButton->hide();
  51     ui->nextButton->setEnabled(false);
  52     ui->previousButton->setEnabled(false);
  53     ui->editButton->setEnabled(false);
  54     ui->removeButton->setEnabled(false);
  55
  56     connect(ui->addButton, SIGNAL(clicked()), this,
  57                 SLOT(addContact()));
  58     connect(ui->submitButton, SIGNAL(clicked()), this,
  59                 SLOT(submitContact()));
  60     connect(ui->cancelButton, SIGNAL(clicked()), this,
  61                 SLOT(cancel()));
  62     connect(ui->nextButton, SIGNAL(clicked()), this,
  63                 SLOT(next()));
  64     connect(ui->previousButton, SIGNAL(clicked()), this,
  65                 SLOT(previous()));
  66     connect(ui->editButton, SIGNAL(clicked()), this,
  67                 SLOT(editContact()));
  68     connect(ui->removeButton, SIGNAL(clicked()), this,
  69                 SLOT(removeContact()));
  70 //! [signal slot]
  71     connect(ui->findButton, SIGNAL(clicked()), this,
  72                 SLOT(findContact()));
  73 //! [signal slot]
  74
  75     setWindowTitle(tr("Simple Address Book"));
  76 }
  77
  78 AddressBook::~AddressBook()
  79 {
  80     delete ui;
  81 }
  82
  83 void AddressBook::addContact()
  84 {
  85     oldName = ui->nameLine->text();
  86     oldAddress = ui->addressText->toPlainText();
  87
  88     ui->nameLine->clear();
  89     ui->addressText->clear();
  90
  91     updateInterface(AddingMode);
  92 }
  93
  94 void AddressBook::submitContact()
  95 {
  96     QString name = ui->nameLine->text();
  97     QString address = ui->addressText->toPlainText();
  98
  99     if (name == "" || address == "") {
 100         QMessageBox::information(this, tr("Empty Field"),
 101             tr("Please enter a name and address."));
 102         updateInterface(NavigationMode);
 103         return;
 104     }
 105
 106     if (currentMode == AddingMode) {
 107
 108         if (!contacts.contains(name)) {
 109             contacts.insert(name, address);
 110             QMessageBox::information(this, tr("Add Successful"),
 111                 tr("\"%1\" has been added to your address book.").arg(name));
 112         } else {
 113             QMessageBox::information(this, tr("Add Unsuccessful"),
 114                 tr("Sorry, \"%1\" is already in your address book.").arg(name));
 115         }
 116
 117     } else if (currentMode == EditingMode) {
 118
 119         if (oldName != name) {
 120             if (!contacts.contains(name)) {
 121                 QMessageBox::information(this, tr("Edit Successful"),
 122                     tr("\"%1\" has been edited in your address book.").arg(oldName));
 123                 contacts.remove(oldName);
 124                 contacts.insert(name, address);
 125             } else  {
 126                 QMessageBox::information(this, tr("Edit Unsuccessful"),
 127                     tr("Sorry, \"%1\" is already in your address book.").arg(name));
 128             }
 129         } else if (oldAddress != address) {
 130             QMessageBox::information(this, tr("Edit Successful"),
 131                 tr("\"%1\" has been edited in your address book.").arg(name));
 132             contacts[name] = address;
 133         }
 134     }
 135     updateInterface(NavigationMode);
 136 }
 137
 138 void AddressBook::cancel()
 139 {
 140     ui->nameLine->setText(oldName);
 141     ui->nameLine->setReadOnly(true);
 142
 143     updateInterface(NavigationMode);
 144 }
 145
 146 void AddressBook::next()
 147 {
 148     QString name = ui->nameLine->text();
 149     QMap<QString, QString>::iterator i = contacts.find(name);
 150
 151     if (i != contacts.end())
 152         i++;
 153     if (i == contacts.end())
 154         i = contacts.begin();
 155
 156     ui->nameLine->setText(i.key());
 157     ui->addressText->setText(i.value());
 158 }
 159
 160 void AddressBook::previous()
 161 {
 162     QString name = ui->nameLine->text();
 163     QMap<QString, QString>::iterator i = contacts.find(name);
 164
 165     if (i == contacts.end()) {
 166         ui->nameLine->clear();
 167         ui->addressText->clear();
 168         return;
 169     }
 170
 171     if (i == contacts.begin())
 172         i = contacts.end();
 173
 174     i--;
 175     ui->nameLine->setText(i.key());
 176     ui->addressText->setText(i.value());
 177 }
 178
 179 void AddressBook::editContact()
 180 {
 181     oldName = ui->nameLine->text();
 182     oldAddress = ui->addressText->toPlainText();
 183
 184     updateInterface(EditingMode);
 185 }
 186
 187 void AddressBook::removeContact()
 188 {
 189     QString name = ui->nameLine->text();
 190     QString address = ui->addressText->toPlainText();
 191
 192     if (contacts.contains(name)) {
 193         int button = QMessageBox::question(this,
 194             tr("Confirm Remove"),
 195             tr("Are you sure you want to remove \"%1\"?").arg(name),
 196             QMessageBox::Yes | QMessageBox::No);
 197
 198         if (button == QMessageBox::Yes) {
 199             previous();
 200             contacts.remove(name);
 201
 202             QMessageBox::information(this, tr("Remove Successful"),
 203                 tr("\"%1\" has been removed from your address book.").arg(name));
 204         }
 205     }
 206
 207     updateInterface(NavigationMode);
 208 }
 209
 210 void AddressBook::updateInterface(Mode mode)
 211 {
 212     currentMode = mode;
 213
 214     switch (currentMode) {
 215
 216     case AddingMode:
 217     case EditingMode:
 218
 219         ui->nameLine->setReadOnly(false);
 220         ui->nameLine->setFocus(Qt::OtherFocusReason);
 221         ui->addressText->setReadOnly(false);
 222
 223         ui->addButton->setEnabled(false);
 224         ui->editButton->setEnabled(false);
 225         ui->removeButton->setEnabled(false);
 226
 227         ui->nextButton->setEnabled(false);
 228         ui->previousButton->setEnabled(false);
 229
 230         ui->submitButton->show();
 231         ui->cancelButton->show();
 232         break;
 233
 234     case NavigationMode:
 235
 236         if (contacts.isEmpty()) {
 237             ui->nameLine->clear();
 238             ui->addressText->clear();
 239         }
 240
 241         ui->nameLine->setReadOnly(true);
 242         ui->addressText->setReadOnly(true);
 243         ui->addButton->setEnabled(true);
 244
 245         int number = contacts.size();
 246         ui->editButton->setEnabled(number >= 1);
 247         ui->removeButton->setEnabled(number >= 1);
 248 //! [enable]
 249         ui->findButton->setEnabled(number > 2);
 250 //! [enable]
 251         ui->nextButton->setEnabled(number > 1);
 252         ui->previousButton->setEnabled(number >1);
 253
 254         ui->submitButton->hide();
 255         ui->cancelButton->hide();
 256         break;
 257     }
 258 }
 259
 260 //! [findContact]
 261 void AddressBook::findContact()
 262 {
 263     FindDialog dialog;
 264
 265     if (dialog.exec() == QDialog::Accepted) {
 266         QString contactName = dialog.findText();
 267
 268         if (contacts.contains(contactName)) {
 269             ui->nameLine->setText(contactName);
 270             ui->addressText->setText(contacts.value(contactName));
 271         } else {
 272             QMessageBox::information(this, tr("Contact Not Found"),
 273                 tr("Sorry, \"%1\" is not in your address book.").arg(contactName));
 274             return;
 275         }
 276     }
 277
 278     updateInterface(NavigationMode);
 279 }
 280 //! [findContact]