doc/examples/addressbook-sdk/part4/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
  54 //! [extract objects]
  55     ui->editButton->setEnabled(false);
  56     ui->removeButton->setEnabled(false);
  57 //! [extract objects]
  58
  59     connect(ui->addButton, SIGNAL(clicked()), this,
  60                 SLOT(addContact()));
  61     connect(ui->submitButton, SIGNAL(clicked()), this,
  62                 SLOT(submitContact()));
  63     connect(ui->cancelButton, SIGNAL(clicked()), this,
  64                 SLOT(cancel()));
  65     connect(ui->nextButton, SIGNAL(clicked()), this,
  66                 SLOT(next()));
  67     connect(ui->previousButton, SIGNAL(clicked()), this,
  68                 SLOT(previous()));
  69 //! [signal slot]
  70     connect(ui->editButton, SIGNAL(clicked()), this,
  71                 SLOT(editContact()));
  72     connect(ui->removeButton, SIGNAL(clicked()), this,
  73                 SLOT(removeContact()));
  74 //! [signal slot]
  75
  76     setWindowTitle(tr("Simple Address Book"));
  77 }
  78
  79 AddressBook::~AddressBook()
  80 {
  81     delete ui;
  82 }
  83
  84 //! [addContact]
  85 void AddressBook::addContact()
  86 {
  87     oldName = ui->nameLine->text();
  88     oldAddress = ui->addressText->toPlainText();
  89
  90     ui->nameLine->clear();
  91     ui->addressText->clear();
  92
  93     updateInterface(AddingMode);
  94 }
  95 //! [addContact]
  96
  97 //! [submitContact part1]
  98 void AddressBook::submitContact()
  99 {
 100 //! [submitContact part1]
 101     QString name = ui->nameLine->text();
 102     QString address = ui->addressText->toPlainText();
 103
 104     if (name == "" || address == "") {
 105         QMessageBox::information(this, tr("Empty Field"),
 106             tr("Please enter a name and address."));
 107     }
 108
 109 //! [submitContact part2]
 110     if (currentMode == AddingMode) {
 111
 112         if (!contacts.contains(name)) {
 113             contacts.insert(name, address);
 114             QMessageBox::information(this, tr("Add Successful"),
 115                 tr("\"%1\" has been added to your address book.").arg(name));
 116         } else {
 117             QMessageBox::information(this, tr("Add Unsuccessful"),
 118                 tr("Sorry, \"%1\" is already in your address book.").arg(name));
 119             return;
 120         }
 121 //! [submitContact part2]
 122
 123 //! [submitContact part3]
 124     } else if (currentMode == EditingMode) {
 125
 126         if (oldName != name) {
 127             if (!contacts.contains(name)) {
 128                 QMessageBox::information(this, tr("Edit Successful"),
 129                     tr("\"%1\" has been edited in your address book.").arg(oldName));
 130                 contacts.remove(oldName);
 131                 contacts.insert(name, address);
 132             } else  {
 133                 QMessageBox::information(this, tr("Edit Unsuccessful"),
 134                     tr("Sorry, \"%1\" is already in your address book.").arg(name));
 135                 return;
 136             }
 137         } else if (oldAddress != address) {
 138             QMessageBox::information(this, tr("Edit Successful"),
 139                 tr("\"%1\" has been edited in your address book.").arg(name));
 140             contacts[name] = address;
 141         }
 142     }
 143     updateInterface(NavigationMode);
 144 }
 145 //! [submitContact part3]
 146
 147 //! [cancel]
 148 void AddressBook::cancel()
 149 {
 150     ui->nameLine->setText(oldName);
 151     ui->nameLine->setReadOnly(true);
 152
 153     updateInterface(NavigationMode);
 154 }
 155 //! [cancel]
 156
 157 void AddressBook::next()
 158 {
 159     QString name = ui->nameLine->text();
 160     QMap<QString, QString>::iterator i = contacts.find(name);
 161
 162     if (i != contacts.end())
 163         i++;
 164     if (i == contacts.end())
 165         i = contacts.begin();
 166
 167     ui->nameLine->setText(i.key());
 168     ui->addressText->setText(i.value());
 169 }
 170
 171 void AddressBook::previous()
 172 {
 173     QString name = ui->nameLine->text();
 174     QMap<QString, QString>::iterator i = contacts.find(name);
 175
 176     if (i == contacts.end()) {
 177         ui->nameLine->clear();
 178         ui->addressText->clear();
 179         return;
 180     }
 181
 182     if (i == contacts.begin())
 183         i = contacts.end();
 184
 185     i--;
 186     ui->nameLine->setText(i.key());
 187     ui->addressText->setText(i.value());
 188 }
 189
 190 //! [editContact]
 191 void AddressBook::editContact()
 192 {
 193     oldName = ui->nameLine->text();
 194     oldAddress = ui->addressText->toPlainText();
 195
 196     updateInterface(EditingMode);
 197 }
 198 //! [editContact]
 199
 200 //! [removeContact]
 201 void AddressBook::removeContact()
 202 {
 203     QString name = ui->nameLine->text();
 204     QString address = ui->addressText->toPlainText();
 205
 206     if (contacts.contains(name)) {
 207         int button = QMessageBox::question(this,
 208             tr("Confirm Remove"),
 209             tr("Are you sure you want to remove \"%1\"?").arg(name),
 210             QMessageBox::Yes | QMessageBox::No);
 211
 212         if (button == QMessageBox::Yes) {
 213             previous();
 214             contacts.remove(name);
 215
 216             QMessageBox::information(this, tr("Remove Successful"),
 217                 tr("\"%1\" has been removed from your address book.").arg(name));
 218         }
 219     }
 220
 221     updateInterface(NavigationMode);
 222 }
 223 //! [removeContact]
 224
 225 //! [updateInterface part1]
 226 void AddressBook::updateInterface(Mode mode)
 227 {
 228     currentMode = mode;
 229
 230     switch (currentMode) {
 231
 232     case AddingMode:
 233     case EditingMode:
 234
 235         ui->nameLine->setReadOnly(false);
 236         ui->nameLine->setFocus(Qt::OtherFocusReason);
 237         ui->addressText->setReadOnly(false);
 238
 239         ui->addButton->setEnabled(false);
 240         ui->editButton->setEnabled(false);
 241         ui->removeButton->setEnabled(false);
 242
 243         ui->nextButton->setEnabled(false);
 244         ui->previousButton->setEnabled(false);
 245
 246         ui->submitButton->show();
 247         ui->cancelButton->show();
 248         break;
 249 //! [updateInterface part1]
 250
 251 //! [updateInterface part2]
 252     case NavigationMode:
 253
 254         if (contacts.isEmpty()) {
 255             ui->nameLine->clear();
 256             ui->addressText->clear();
 257         }
 258
 259         ui->nameLine->setReadOnly(true);
 260         ui->addressText->setReadOnly(true);
 261         ui->addButton->setEnabled(true);
 262
 263         int number = contacts.size();
 264         ui->editButton->setEnabled(number >= 1);
 265         ui->removeButton->setEnabled(number >= 1);
 266         ui->nextButton->setEnabled(number > 1);
 267         ui->previousButton->setEnabled(number >1);
 268
 269         ui->submitButton->hide();
 270         ui->cancelButton->hide();
 271         break;
 272     }
 273 }
 274 //! [updateInterface part2]