第四十八课、替换对话框的设计与实现------------------狄泰软件学院

一、替换对话框

#include "ReplaceDialog.h"

ReplaceDialog::ReplaceDialog(QWidget *parent, QPlainTextEdit* pText) :
FindDialog(parent, pText)
{
initControl();

connect(&m_replaceButton, SIGNAL(clicked()), this, SLOT(onReplaceButtonClicked()));
connect(&m_replaceAllButton, SIGNAL(clicked()), this, SLOT(onReplaceAllButtonClicked()));

setWindowTitle("替换");
setLayout(&m_gLayout);
}

void ReplaceDialog::initControl()
{
m_replaceButton.setText("替换");
m_replaceAllButton.setText("全部替换");
m_replaceAsLabel.setText("替换为： ");

m_gLayout.removeWidget(&m_checkBox);
m_gLayout.removeWidget(&m_gBox);
m_gLayout.removeWidget(&m_cancleButton);

m_gLayout.addWidget(&m_replaceAsLabel, 1, 0);
m_gLayout.addWidget(&m_replaceEdit, 1, 1);
m_gLayout.addWidget(&m_replaceButton, 1, 2);
m_gLayout.addWidget(&m_replaceAllButton, 2, 2);
m_gLayout.addWidget(&m_checkBox, 3, 0);
m_gLayout.addWidget(&m_gBox, 3, 1);
m_gLayout.addWidget(&m_cancleButton, 3, 2);

}

void ReplaceDialog::onReplaceButtonClicked()
{
QString target = m_findLineEdit.text();
QString to = m_replaceEdit.text();

if(m_plainTextEdit != NULL && target !="" && to != "")
{
QString text = m_plainTextEdit->toPlainText();

QString selText = m_plainTextEdit->textCursor().selectedText();

if(selText == target)
{
m_plainTextEdit->insertPlainText(to);
}

onFindButtonClicked();
}

}
void ReplaceDialog::onReplaceAllButtonClicked()
{
QString target = m_findLineEdit.text();
QString to = m_replaceEdit.text();

if(m_plainTextEdit != NULL && target !="" && to != "")
{
QString text = m_plainTextEdit->toPlainText();

text.replace(target, to, m_checkBox.isChecked()? Qt::CaseSensitive : Qt::CaseInsensitive);

m_plainTextEdit->clear();

m_plainTextEdit->setPlainText(text);
}
}

二、小结