(二)使用预定义模型 QStringListModel例子

使用预定义模型 QStringListModel例子

源代码如下

Main.cpp

Cpp代码







#include <QApplication>

#include "teamleadersdialog.h"

int main(int argc, char *argv[])

{
QApplication app(argc, argv);

//字符串数组
QStringList leaders;
leaders << "Stooge Viller" << "Littleface" << "B-B Eyes"
<< "Pruneface" << "Mrs. Pruneface" << "The Brow"
<< "Vitamin Flintheart" << "Flattop Sr." << "Shakey"
<< "Breathless Mahoney" << "Mumbles" << "Shoulders"
<< "Sketch Paree";

//对话框
TeamLeadersDialog dialog(leaders);
dialog.show();

return app.exec();
}

#include <QApplication>

#include "teamleadersdialog.h"

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

//字符串数组
QStringList leaders;
leaders << "Stooge Viller" << "Littleface" << "B-B Eyes"
<< "Pruneface" << "Mrs. Pruneface" << "The Brow"
<< "Vitamin Flintheart" << "Flattop Sr." << "Shakey"
<< "Breathless Mahoney" << "Mumbles" << "Shoulders"
<< "Sketch Paree";

//对话框
TeamLeadersDialog dialog(leaders);
dialog.show();

return app.exec();
}

teamleadersdialog.h

Cpp代码







#ifndef TEAMLEADERSDIALOG_H #define TEAMLEADERSDIALOG_H #include <QDialog> class QDialogButtonBox; class QListView; class QStringListModel; class TeamLeadersDialog : public QDialog { Q_OBJECT public: //构造函数 TeamLeadersDialog(const QStringList &leaders, QWidget *parent = 0); QStringList leaders() const; private slots: void insert(); void del(); private: QListView *listView; QDialogButtonBox *buttonBox; QStringListModel *model; }; #endif

#ifndef TEAMLEADERSDIALOG_H
#define TEAMLEADERSDIALOG_H

#include <QDialog>

class QDialogButtonBox;
class QListView;
class QStringListModel;

class TeamLeadersDialog : public QDialog
{
Q_OBJECT

public:
//构造函数
TeamLeadersDialog(const QStringList &leaders, QWidget *parent = 0);

QStringList leaders() const;

private slots:
void insert();
void del();

private:
QListView *listView;
QDialogButtonBox *buttonBox;
QStringListModel *model;
};

#endif

teamleadersdialog.cpp

Cpp代码







#include <QtGui>

#include "teamleadersdialog.h"

TeamLeadersDialog::TeamLeadersDialog(const QStringList &leaders,
QWidget *parent)
: QDialog(parent)
{
//创建并组装一个QStringListModel
model = new QStringListModel(this);
model->setStringList(leaders);

//创建一个QListView
listView = new QListView;
//设置模型
listView->setModel(model);
//设置QListView编辑触发器：通过开始输入或者双击进入编辑字符串的状态

listView->setEditTriggers(QAbstractItemView::AnyKeyPressed
| QAbstractItemView::DoubleClicked);
//
buttonBox = new QDialogButtonBox();
QPushButton *insertButton = buttonBox->addButton(tr("&Insert"),
QDialogButtonBox::ActionRole);
QPushButton *deleteButton = buttonBox->addButton(tr("&Delete"),
QDialogButtonBox::ActionRole);
buttonBox->addButton(QDialogButtonBox::Ok);
buttonBox->addButton(QDialogButtonBox::Cancel);
//信号槽绑定插入、删除按钮
connect(insertButton, SIGNAL(clicked()), this, SLOT(insert()));
connect(deleteButton, SIGNAL(clicked()), this, SLOT(del()));
//按钮盒的ok和Cancel事件
connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

//界面竖直布局listView和buttonBox
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(listView);
mainLayout->addWidget(buttonBox);
//设置当前窗口的布局为mainLayout
setLayout(mainLayout);

setWindowTitle(tr("Team Leaders"));
}
//获取当前模型中的内容
QStringList TeamLeadersDialog::leaders() const
{
return model->stringList();
}

void TeamLeadersDialog::insert()
{
//从列表视图得到当前项的行数
int row = listView->currentIndex().row();
//在模型中插入一个新行，并且模型会自动更新列表视图
model->insertRows(row, 1);
//获取当前行在模型中的"模型索引"
QModelIndex index = model->index(row);
//设置刚刚插入的空白行为列表视图的当前索引
listView->setCurrentIndex(index);
//设置列表视图在当前行进入编辑状态
listView->edit(index);
}

void TeamLeadersDialog::del()
{
//从目前行开始，共删除1行model数据，并自动更新列表视图

model->removeRows(listView->currentIndex().row(), 1);
}