add addressbook

addressbook/adddialog.cpp

@@ -0,0 +1,40 @@
+#include "adddialog.h"
+
+#include <QtWidgets>
+
+//实现增加姓名--地址的对话框
+AddDialog::AddDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    nameLabel = new QLabel("Name");
+    addressLabel = new QLabel("Address");
+    okButton = new QPushButton("OK");
+    cancelButton = new QPushButton("Cancel");
+
+    nameText = new QLineEdit;
+    addressText = new QTextEdit;
+
+    //通过QGridLayout来进行排列
+    QGridLayout *gLayout = new QGridLayout;
+    gLayout->setColumnStretch(1, 2);
+    gLayout->addWidget(nameLabel, 0, 0);
+    gLayout->addWidget(nameText, 0, 1);
+
+    gLayout->addWidget(addressLabel, 1, 0, Qt::AlignLeft|Qt::AlignTop);
+    gLayout->addWidget(addressText, 1, 1, Qt::AlignLeft);
+
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    buttonLayout->addWidget(okButton);
+    buttonLayout->addWidget(cancelButton);
+
+    gLayout->addLayout(buttonLayout, 2, 1, Qt::AlignRight);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addLayout(gLayout);
+    setLayout(mainLayout);
+
+    connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
+    connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
+
+    setWindowTitle(tr("Add a Contact"));
+}

addressbook/adddialog.h

@@ -0,0 +1,27 @@
+#ifndef ADDDIALOG_H
+#define ADDDIALOG_H
+
+#include <QDialog>
+
+class QLabel;
+class QPushButton;
+class QTextEdit;
+class QLineEdit;
+
+class AddDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    AddDialog(QWidget *parent = 0);
+    QLineEdit *nameText;
+    QTextEdit *addressText;
+
+private:
+    QLabel *nameLabel;
+    QLabel *addressLabel;
+    QPushButton *okButton;
+    QPushButton *cancelButton;
+};
+
+#endif // ADDDIALOG_H

addressbook/addressbook.pro

@@ -0,0 +1,28 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2014-11-19T19:28:57
+#
+#-------------------------------------------------
+
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET = addressbook
+TEMPLATE = app
+
+
+SOURCES += main.cpp\
+        mainwindow.cpp \
+    tablemodel.cpp \
+    newaddresstab.cpp \
+    addresswidget.cpp \
+    adddialog.cpp
+
+HEADERS  += mainwindow.h \
+    tablemodel.h \
+    newaddresstab.h \
+    addresswidget.h \
+    adddialog.h
+
+FORMS    += mainwindow.ui

addressbook/addresswidget.cpp

@@ -0,0 +1,201 @@
+
+#include "adddialog.h"
+#include "addresswidget.h"
+
+#include <QtWidgets>
+
+AddressWidget::AddressWidget(QWidget *parent)
+    : QTabWidget(parent)
+{
+    table = new TableModel(this);
+    newAddressTab = new NewAddressTab(this);
+    //新增一个地址时候，触发sendDetails信号，而addEntry接收到新增的“姓名--地址”数据
+    connect(newAddressTab, SIGNAL(sendDetails(QString, QString)),
+        this, SLOT(addEntry(QString, QString)));
+
+    addTab(newAddressTab, "Address Book");
+
+    setupTabs();
+}
+
+void AddressWidget::addEntry()
+{
+    AddDialog aDialog;
+
+    if (aDialog.exec()) {
+        QString name = aDialog.nameText->text();
+        QString address = aDialog.addressText->toPlainText();
+
+        addEntry(name, address);
+    }
+}
+
+void AddressWidget::addEntry(QString name, QString address)
+{
+    //当前table表格的数据（这里会产生9张table表格）
+    QList<QPair<QString, QString> >list = table->getList();
+    QPair<QString, QString> pair(name, address);
+
+    //姓名--地址不可重复
+    if (!list.contains(pair)) {
+        //在table的第0行0列（第一个参数）新增一行（第二个参数）
+        table->insertRows(0, 1, QModelIndex());
+
+        //index为第0行0列
+        QModelIndex index = table->index(0, 0, QModelIndex());
+        table->setData(index, name, Qt::EditRole);
+        //index为第0行第1列
+        index = table->index(0, 1, QModelIndex());
+        table->setData(index, address, Qt::EditRole);
+        //新增姓名--地址后，删除newAddressTab
+        removeTab(indexOf(newAddressTab));
+    } else {
+        QMessageBox::information(this, tr("Duplicate Name"),
+            tr("The name \"%1\" already exists.").arg(name));
+    }
+}
+
+void AddressWidget::editEntry()
+{
+    //得到当前的QTableView
+    QTableView *temp = static_cast<QTableView*>(currentWidget());
+    //QSortFilterProxyModel在model和view之间提供排序和过滤
+    QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());
+    //选择model
+    QItemSelectionModel *selectionModel = temp->selectionModel();
+
+    //得到当前所要被修改的索引---这里indexes实际上就一项（因为只允许选择一行）
+    QModelIndexList indexes = selectionModel->selectedRows();
+    QString name;
+    QString address;
+    int row = -1;
+
+    foreach (QModelIndex index, indexes) {
+        //mapToSource：Returns the source model index corresponding to the given proxyIndex from the sorting filter model.
+        row = proxy->mapToSource(index).row();
+        //得到姓名数据---这里table指针是一个模型，关联具体表格
+        QModelIndex nameIndex = table->index(row, 0, QModelIndex());
+        QVariant varName = table->data(nameIndex, Qt::DisplayRole);
+        name = varName.toString();
+
+        //得到地址数据
+        QModelIndex addressIndex = table->index(row, 1, QModelIndex());
+        QVariant varAddr = table->data(addressIndex, Qt::DisplayRole);
+        address = varAddr.toString();
+    }
+
+    AddDialog aDialog;
+    aDialog.setWindowTitle(tr("Edit a Contact"));
+
+    //只允许更改地址
+    aDialog.nameText->setReadOnly(true);
+    aDialog.nameText->setText(name);
+    aDialog.addressText->setText(address);
+
+    if (aDialog.exec()) {
+        QString newAddress = aDialog.addressText->toPlainText();
+        if (newAddress != address) {
+            //得到第row行第二列（1）的索引，通过setData来更新数据
+            QModelIndex index = table->index(row, 1, QModelIndex());
+            table->setData(index, newAddress, Qt::EditRole);
+        }
+    }
+}
+
+void AddressWidget::removeEntry()
+{
+    QTableView *temp = static_cast<QTableView*>(currentWidget());
+    QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());
+    QItemSelectionModel *selectionModel = temp->selectionModel();
+
+    QModelIndexList indexes = selectionModel->selectedRows();
+
+    foreach (QModelIndex index, indexes) {
+        int row = proxy->mapToSource(index).row();
+        //从row行开始删除一行
+        table->removeRows(row, 1, QModelIndex());
+    }
+
+    if (table->rowCount(QModelIndex()) == 0) {
+        insertTab(0, newAddressTab, "Address Book");
+    }
+}
+
+//实现九列表格框
+void AddressWidget::setupTabs()
+{
+    QStringList groups;
+    groups << "ABC" << "DEF" << "GHI" << "JKL" << "MNO" << "PQR" << "STU" << "VW" << "XYZ";
+
+    for (int i = 0; i < groups.size(); ++i) {
+        QString str = groups.at(i);
+        QString regExp = QString("^[%1].*").arg(str);
+
+        //设定过滤模型--在model（模型中专门用于处理数据，而view则用于显示数据）
+        proxyModel = new QSortFilterProxyModel(this);
+        proxyModel->setSourceModel(table);
+        proxyModel->setFilterRegExp(QRegExp(regExp, Qt::CaseInsensitive));
+        proxyModel->setFilterKeyColumn(0);
+
+        //将过滤模型添加到视图中：则数据显示之前会被自动过滤（这里的过滤是自动排序）
+        QTableView *tableView = new QTableView;
+        tableView->setModel(proxyModel);
+
+        //允许用户选择行
+        tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
+        tableView->horizontalHeader()->setStretchLastSection(true);
+        tableView->verticalHeader()->hide();
+        tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);
+        //允许用户选择一整行
+        tableView->setSelectionMode(QAbstractItemView::SingleSelection);
+
+        tableView->setSortingEnabled(true);
+
+        //此信号槽的作用不太理解---
+        connect(tableView->selectionModel(),
+            SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
+            this, SIGNAL(selectionChanged(QItemSelection)));
+
+        //这里新建的一张表格是groups的一部分（groups包含九张表格）
+        addTab(tableView, str);
+    }
+}
+
+void AddressWidget::readFromFile(const QString &fileName)
+{
+    QFile file(fileName);
+
+    if (!file.open(QIODevice::ReadOnly)) {
+        QMessageBox::information(this, tr("Unable to open file"),
+            file.errorString());
+        return;
+    }
+
+    QList<QPair<QString, QString> > pairs = table->getList();
+    QDataStream in(&file);
+    in >> pairs;
+
+    if (pairs.isEmpty()) {
+        QMessageBox::information(this, tr("No contacts in file"),
+                                 tr("The file you are attempting to open contains no contacts."));
+    } else {
+        for (int i=0; i<pairs.size(); ++i) {
+            QPair<QString, QString> p = pairs.at(i);
+            addEntry(p.first, p.second);
+        }
+    }
+}
+
+void AddressWidget::writeToFile(const QString &fileName)
+{
+    QFile file(fileName);
+
+    if (!file.open(QIODevice::WriteOnly)) {
+        QMessageBox::information(this, tr("Unable to open file"), file.errorString());
+        return;
+    }
+
+    QList<QPair<QString, QString> > pairs = table->getList();
+    QDataStream out(&file);
+    out << pairs;
+}

addressbook/addresswidget.h

@@ -0,0 +1,39 @@
+#ifndef ADDRESSWIDGET_H
+#define ADDRESSWIDGET_H
+
+#include "newaddresstab.h"
+#include "tablemodel.h"
+
+#include <QItemSelection>
+#include <QTabWidget>
+
+class QSortFilterProxyModel;
+class QItemSelectionModel;
+
+class AddressWidget : public QTabWidget
+{
+    Q_OBJECT
+
+public:
+    AddressWidget(QWidget *parent = 0);
+    void readFromFile(const QString &fileName);
+    void writeToFile(const QString &fileName);
+
+public slots:
+    void addEntry();
+    void addEntry(QString name, QString address);
+    void editEntry();
+    void removeEntry();
+
+signals:
+    void selectionChanged (const QItemSelection &selected);
+
+private:
+    void setupTabs();
+
+    TableModel *table;
+    NewAddressTab *newAddressTab;
+    QSortFilterProxyModel *proxyModel;
+};
+
+#endif // ADDRESSWIDGET_H

addressbook/main.cpp

@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+
+    return a.exec();
+}