111 lines
4.3 KiB
Python
111 lines
4.3 KiB
Python
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from PySide6.QtWidgets import QApplication, QLineEdit, QComboBox
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from PySide6.QtCore import QObject, Signal
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import logging
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class FocusTracker(QObject):
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"""焦点跟踪器，用于跟踪当前焦点所在的输入框"""
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# 定义单例
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_instance = None
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# 信号：当焦点变化时触发
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focus_changed = Signal(object)
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@classmethod
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def get_instance(cls):
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"""获取单例实例"""
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if cls._instance is None:
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cls._instance = FocusTracker()
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return cls._instance
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def __init__(self):
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"""初始化焦点跟踪器"""
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if FocusTracker._instance is not None:
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raise Exception("FocusTracker是单例类，请使用get_instance()方法获取实例")
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super().__init__()
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self._current_focus = None
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self._initialized = False
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def initialize(self):
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"""初始化焦点跟踪"""
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if self._initialized:
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return
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# 连接应用程序的焦点变化信号
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app = QApplication.instance()
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if app:
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app.focusChanged.connect(self._on_focus_changed)
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self._initialized = True
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logging.info("焦点跟踪器已初始化")
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else:
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logging.error("无法获取QApplication实例，焦点跟踪器初始化失败")
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def _on_focus_changed(self, old, now):
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"""焦点变化处理"""
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# 关注QLineEdit和QComboBox控件
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if isinstance(now, (QLineEdit, QComboBox)):
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self._current_focus = now
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self.focus_changed.emit(now)
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widget_type = "输入框" if isinstance(now, QLineEdit) else "下拉框"
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logging.debug(f"焦点变化到{widget_type}: {now.objectName()}")
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def get_current_focus(self):
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"""获取当前焦点所在的控件"""
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return self._current_focus
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def set_text_and_trigger_enter(self, text):
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"""设置当前焦点控件的文本并触发回车事件"""
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if not self._current_focus:
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logging.warning("当前没有焦点控件，无法设置文本和触发回车事件")
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return False
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# 创建回车键事件
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from PySide6.QtGui import QKeyEvent
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from PySide6.QtCore import Qt, QEvent
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key_event = QKeyEvent(QEvent.KeyPress, Qt.Key_Return, Qt.NoModifier)
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# 根据控件类型处理
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if isinstance(self._current_focus, QLineEdit):
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# 设置文本
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self._current_focus.setText(text)
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# 发送事件到当前焦点控件
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QApplication.sendEvent(self._current_focus, key_event)
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logging.info(f"已将文本 '{text}' 设置到输入框并触发回车事件")
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return True
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elif isinstance(self._current_focus, QComboBox):
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# 对于ComboBox，先查找匹配的项
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combo_box = self._current_focus
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# 查找完全匹配的项
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index = combo_box.findText(text)
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if index >= 0:
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combo_box.setCurrentIndex(index)
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logging.info(f"已在下拉框中选择匹配项: '{text}'")
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else:
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# 如果没有完全匹配的项，设置为编辑文本（如果ComboBox是可编辑的）
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if combo_box.isEditable():
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combo_box.setEditText(text)
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logging.info(f"已将文本 '{text}' 设置到可编辑下拉框")
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else:
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logging.warning(f"下拉框中没有匹配项 '{text}'，且下拉框不可编辑")
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return False
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# 发送事件到当前焦点控件
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QApplication.sendEvent(combo_box, key_event)
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# 如果ComboBox有activated信号，手动触发
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try:
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if hasattr(combo_box, 'activated'):
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combo_box.activated.emit(combo_box.currentIndex())
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logging.debug("已触发下拉框的activated信号")
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except Exception as e:
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logging.error(f"触发下拉框activated信号失败: {e}")
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return True
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else:
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logging.warning(f"不支持的控件类型: {type(self._current_focus)}")
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return False
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