Function:
1. Click the Open Find and Replace button to pop up the Find and Replace window. After selecting the string, the window will open and the value will be automatically searched.
2. All found results are highlighted.
3. Display the number of results found and the number currently found
4. Implement batch replacement
Rendering:
Code:
import re
importsys
from PyQt5.QtCore import QRegExp, Qt
from PyQt5.QtGui import QTextCharFormat, QColor, QTextCursor, QPalette, QFont
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QVBoxLayout, QLineEdit, QLabel, QWidget, QCheckBox, \
QStatusBar, QToolBar, QComboBox, QTextEdit
class FindReplace(QMainWindow):
def __init__(self, parent=None):
super(FindReplace, self).__init__(parent)
def setupUi(self, text_edit,find_text):
# Set positioning and upper left corner coordinates
self.setGeometry(1200, 200, 250, 300)
self.setWindowTitle("Find/Replace")
self.text_edit = text_edit
self.find_replace_window_is_open = 1
self.find_count = 0 #Number of searches
self.find_label = QLabel("Find:")
self.find_edit = QComboBox()
self.find_edit.setEditable(True)
self.find_edit.activated.connect(self.find_text)
self.find_edit.editTextChanged.connect(self.find_text_edit)
self.replace_label = QLabel("Replace:")
self.replace_edit = QLineEdit()
self.find_cb_case_sensitive = QCheckBox()
self.find_cb_case_sensitive.setChecked(True)
#self.find_cb_case_sensitive.stateChanged.connect(self.restore_checkbox_clicked)
self.find_label_case_sensitive = QLabel()
self.find_label_case_sensitive.setText("Case-insensitive:")
self.find_cb_case_sensitive = QCheckBox()
self.find_cb_case_sensitive.setChecked(True)
#self.find_cb_case_sensitive.stateChanged.connect(self.restore_checkbox_clicked)
self.find_label_case_sensitive = QLabel()
self.find_label_case_sensitive.setText("Highlight all:")
self.find_button = QPushButton('Find')
self.find_button.clicked.connect(self.find_text)
self.replace_button = QPushButton('replace')
self.replace_button.clicked.connect(self.replace_text)
self.replace_all_button = QPushButton('Replace all')
self.replace_all_button.clicked.connect(self.replace_text_all)
self.find_StatusBar1 = QToolBar()
#self.find_StatusBar1 = QStatusBar()
self.find_StatusBar1.setLayoutDirection(Qt.LeftToRight)
self.find_StatusBar1_Label = QLabel()
self.find_StatusBar1_Label.setStyleSheet("QLabel { color: blue; }")
self.find_StatusBar1_Label.setFont(QFont("Microsoft YaHei", 8, 0))
self.find_StatusBar1.addWidget(self.find_StatusBar1_Label)
self.find_edit.addItem(find_text)
layout = QVBoxLayout()
layout.addWidget(self.find_label)
layout.addWidget(self.find_edit)
layout.addWidget(self.replace_label)
layout.addWidget(self.replace_edit)
layout.addWidget(self.find_button)
layout.addWidget(self.replace_button)
layout.addWidget(self.replace_all_button)
layout.addWidget(self.find_StatusBar1)
container = QWidget()
container.setLayout(layout)
self.setCentralWidget(container)
def find_text_edit(self):
self.position = self.text_edit.textCursor().position()
text = self.text_edit.document().toPlainText()
find_text = self.find_edit.currentText()
text_edit_select = self.text_edit.textCursor().selectedText()
if find_text == '':
self.background_reset(text)
return
if text_edit_select:
self.position = self.position - len(text_edit_select)
self.find_and_highlight()
if self.i > 0:
self.find_and_select()
def find_text(self):
self.position = self.text_edit.textCursor().position()
find_text = self.find_edit.currentText()
text = self.text_edit.document().toPlainText()
if find_text == '':
self.background_reset(text)
return
self.find_and_highlight()
if self.i > 0 :
self.find_and_select()
def find_and_select(self):
text = self.text_edit.document().toPlainText()
find_text = self.find_edit.currentText()
re_search = QRegExp(find_text)
matches = re.finditer(re_search.pattern(), text)
length = len(find_text)
format = QTextCharFormat()
format.setBackground(QColor("yellow"))
# Loop through documents
j = 0
for match in matches:
if j == 0:
self.start_match = match
j+=1
index = match.start()
if index >= self.position:
cursor = self.text_edit.textCursor()
cursor.setPosition(index)
cursor.movePosition(QTextCursor.Right, QTextCursor.KeepAnchor, length)
#self.text_edit.setFocus()
self.text_edit.setTextCursor(cursor)
cursor = self.text_edit.textCursor()
cursor.mergeCharFormat(format) # Change the background color of the text
self.find_StatusBar1_Label.setText(str(self.i) + 'result, current ' + str(j) + 'result)
break
#Judge if it reaches the end, then display the first one
if self.i > 0 and self.i == j:
index = self.start_match.start()
cursor = self.text_edit.textCursor()
cursor.setPosition(index)
cursor.movePosition(QTextCursor.Right, QTextCursor.KeepAnchor, length)
# self.text_edit.setFocus()
self.text_edit.setTextCursor(cursor)
cursor = self.text_edit.textCursor()
cursor.mergeCharFormat(format) # Change the background color of the text
self.find_StatusBar1_Label.setText(str(self.i) + ' results, current 1')
def find_and_highlight(self):
text_edit_select = self.text_edit.textCursor().selectedText()
text = self.text_edit.document().toPlainText()
find_text = self.find_edit.currentText()
re_search = QRegExp(find_text)
matches = re.finditer(re_search.pattern(), text)
length = len(find_text)
#Set the background color to white
self.background_reset(text)
cursor = self.text_edit.textCursor()
format = QTextCharFormat()
format.setBackground(QColor("yellow"))
self.i = 0
# Loop through the document to select and display the value
for match in re.finditer(re.escape(find_text), text):
self.i + = 1
start = match.start()
end = match.end()
cursor.setPosition(start)
cursor.movePosition(QTextCursor.Right, QTextCursor.KeepAnchor, end - start)
cursor.mergeCharFormat(format)
self.find_edit.setStyleSheet("QComboBox { color: black; }")
self.find_StatusBar1_Label.setText(str(self.i) + 'results')
if self.i == 0:
self.find_edit.setStyleSheet("QComboBox { color: red; }")
self.find_StatusBar1_Label.setStyleSheet("QLabel { color: red; }")
else:
self.find_StatusBar1_Label.setStyleSheet("QLabel { color: blue; }")
#Judge the first time you enter. If the textedit selected string is equal to the search string, move the cursor to the initialization - search string length to facilitate the search for the first time it is selected.
if self.find_count == 0 and text_edit_select == find_text:
self.position = self.position - len(find_text)
self.find_count + = 1
def replace_text(self):
text = self.text_edit.document().toPlainText()
find_text = self.find_edit.currentText()
replace_text = self.replace_edit.text()
self.background_reset(text)
if find_text:
text = text.replace(find_text, replace_text)
self.text_edit.setPlainText(text)
def replace_text_all(self):
text_edit_select = self.text_edit.textCursor().selectedText()
text = self.text_edit.document().toPlainText()
find_text = self.find_edit.currentText()
replace_text = self.replace_edit.text()
self.background_reset(text)
if find_text == text_edit_select:
text = text.replace(find_text, replace_text)
self.text_edit.setPlainText(text)
def background_reset(self,text):
#Set the background color to white
format = QTextCharFormat()
format.setBackground(QColor("white"))
cursor = self.text_edit.textCursor()
cursor.setPosition(0)
cursor.movePosition(QTextCursor.Right, QTextCursor.KeepAnchor, len(text))
cursor.mergeCharFormat(format) # Change the background color of the text
def closeEvent(self, event):
#Add here the action you want to perform when closing the window
self.background_reset(self.text_edit.document().toPlainText())
self.find_replace_window_is_open = 0
#Set the background color to white
text = self.text_edit.document().toPlainText()
self.background_reset(text)
print("Window closed")
event.accept()
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setWindowTitle("Main Window")
self.setGeometry(400, 100, 1100, 800)
self.text_edit = QTextEdit()
self.button = QPushButton("Open the find and replace window")
self.button.clicked.connect(self.open_find_replace_window)
layout = QVBoxLayout()
layout.addWidget(self.text_edit)
layout.addWidget(self.button)
container = QWidget()
container.setLayout(layout)
self.setCentralWidget(container)
def open_find_replace_window(self):
find_text = self.text_edit.textCursor().selectedText()
self.find_replace_window = FindReplace(self)
self.find_replace_window.setupUi(self.text_edit,find_text)
self.find_replace_window.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
main_window = MainWindow()
main_window.show()
sys.exit(app.exec_())