eric6/Debugger/BreakPointModel.py

changeset 6942
2602857055c5
parent 6645
ad476851d7e0
child 7025
83e110e3fcc6
diff -r f99d60d6b59b -r 2602857055c5 eric6/Debugger/BreakPointModel.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Debugger/BreakPointModel.py	Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,315 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2006 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the Breakpoint model.
+"""
+
+from __future__ import unicode_literals
+
+from PyQt5.QtCore import pyqtSignal, Qt, QAbstractItemModel, QModelIndex
+
+
+class BreakPointModel(QAbstractItemModel):
+    """
+    Class implementing a custom model for breakpoints.
+    
+    @signal dataAboutToBeChanged(QModelIndex, QModelIndex) emitted to indicate
+        a change of the data
+    """
+    dataAboutToBeChanged = pyqtSignal(QModelIndex, QModelIndex)
+    
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent reference to the parent widget (QObject)
+        """
+        super(BreakPointModel, self).__init__(parent)
+        
+        self.breakpoints = []
+        self.header = [
+            self.tr("Filename"),
+            self.tr("Line"),
+            self.tr('Condition'),
+            self.tr('Temporary'),
+            self.tr('Enabled'),
+            self.tr('Ignore Count'),
+        ]
+        self.alignments = [Qt.Alignment(Qt.AlignLeft),
+                           Qt.Alignment(Qt.AlignRight),
+                           Qt.Alignment(Qt.AlignLeft),
+                           Qt.Alignment(Qt.AlignHCenter),
+                           Qt.Alignment(Qt.AlignHCenter),
+                           Qt.Alignment(Qt.AlignRight),
+                           Qt.Alignment(Qt.AlignHCenter),
+                           ]
+
+    def columnCount(self, parent=None):
+        """
+        Public method to get the current column count.
+        
+        @param parent reference to parent index (QModelIndex) (Unused)
+        @return column count (integer)
+        """
+        return len(self.header)
+    
+    def rowCount(self, parent=None):
+        """
+        Public method to get the current row count.
+        
+        @param parent reference to parent index (QModelIndex)
+        @return row count (integer)
+        """
+        # we do not have a tree, parent should always be invalid
+        if parent is None or not parent.isValid():
+            return len(self.breakpoints)
+        else:
+            return 0
+    
+    def data(self, index, role=Qt.DisplayRole):
+        """
+        Public method to get the requested data.
+        
+        @param index index of the requested data (QModelIndex)
+        @param role role of the requested data (Qt.ItemDataRole)
+        @return the requested data
+        """
+        if not index.isValid():
+            return None
+        
+        if role == Qt.DisplayRole:
+            if index.column() in [0, 1, 2, 5]:
+                return self.breakpoints[index.row()][index.column()]
+        
+        if role == Qt.CheckStateRole:
+            if index.column() in [3, 4]:
+                return self.breakpoints[index.row()][index.column()]
+        
+        if role == Qt.ToolTipRole:
+            if index.column() in [0, 2]:
+                return self.breakpoints[index.row()][index.column()]
+        
+        if role == Qt.TextAlignmentRole:
+            if index.column() < len(self.alignments):
+                return self.alignments[index.column()]
+        
+        return None
+    
+    def setData(self, index, value, role=Qt.EditRole):
+        """
+        Public method to change data in the model.
+        
+        @param index index of the changed data (QModelIndex)
+        @param value value of the changed data
+        @param role role of the changed data (Qt.ItemDataRole)
+        @return flag indicating success (boolean)
+        """
+        if not index.isValid() or \
+           index.column() >= len(self.header) or \
+           index.row() >= len(self.breakpoints):
+            return False
+        
+        self.dataAboutToBeChanged.emit(index, index)
+        self.breakpoints[index.row()][index.column()] = value
+        self.dataChanged.emit(index, index)
+        return True
+    
+    def flags(self, index):
+        """
+        Public method to get item flags.
+        
+        @param index index of the requested flags (QModelIndex)
+        @return item flags for the given index (Qt.ItemFlags)
+        """
+        if not index.isValid():
+            return Qt.ItemIsEnabled
+        
+        return Qt.ItemIsEnabled | Qt.ItemIsSelectable
+    
+    def headerData(self, section, orientation, role=Qt.DisplayRole):
+        """
+        Public method to get header data.
+        
+        @param section section number of the requested header data (integer)
+        @param orientation orientation of the header (Qt.Orientation)
+        @param role role of the requested data (Qt.ItemDataRole)
+        @return header data
+        """
+        if orientation == Qt.Horizontal and role == Qt.DisplayRole:
+            if section >= len(self.header):
+                return ""
+            else:
+                return self.header[section]
+        
+        return None
+    
+    def index(self, row, column, parent=None):
+        """
+        Public method to create an index.
+        
+        @param row row number for the index (integer)
+        @param column column number for the index (integer)
+        @param parent index of the parent item (QModelIndex)
+        @return requested index (QModelIndex)
+        """
+        if (parent and parent.isValid()) or \
+           row < 0 or row >= len(self.breakpoints) or \
+           column < 0 or column >= len(self.header):
+            return QModelIndex()
+        
+        return self.createIndex(row, column, self.breakpoints[row])
+
+    def parent(self, index):
+        """
+        Public method to get the parent index.
+        
+        @param index index of item to get parent (QModelIndex)
+        @return index of parent (QModelIndex)
+        """
+        return QModelIndex()
+    
+    def hasChildren(self, parent=None):
+        """
+        Public method to check for the presence of child items.
+        
+        @param parent index of parent item (QModelIndex)
+        @return flag indicating the presence of child items (boolean)
+        """
+        if parent is None or not parent.isValid():
+            return len(self.breakpoints) > 0
+        else:
+            return False
+    
+    ###########################################################################
+    
+    def addBreakPoint(self, fn, line, properties):
+        """
+        Public method to add a new breakpoint to the list.
+        
+        @param fn filename of the breakpoint (string)
+        @param line line number of the breakpoint (integer)
+        @param properties properties of the breakpoint
+            (tuple of condition (string), temporary flag (bool),
+             enabled flag (bool), ignore count (integer))
+        """
+        bp = [fn, line] + list(properties)
+        cnt = len(self.breakpoints)
+        self.beginInsertRows(QModelIndex(), cnt, cnt)
+        self.breakpoints.append(bp)
+        self.endInsertRows()
+    
+    def setBreakPointByIndex(self, index, fn, line, properties):
+        """
+        Public method to set the values of a breakpoint given by index.
+        
+        @param index index of the breakpoint (QModelIndex)
+        @param fn filename of the breakpoint (string)
+        @param line line number of the breakpoint (integer)
+        @param properties properties of the breakpoint
+            (tuple of condition (string), temporary flag (bool),
+             enabled flag (bool), ignore count (integer))
+        """
+        if index.isValid():
+            row = index.row()
+            index1 = self.createIndex(row, 0, self.breakpoints[row])
+            index2 = self.createIndex(
+                row, len(self.breakpoints[row]), self.breakpoints[row])
+            self.dataAboutToBeChanged.emit(index1, index2)
+            self.breakpoints[row] = [fn, line] + list(properties)
+            self.dataChanged.emit(index1, index2)
+
+    def setBreakPointEnabledByIndex(self, index, enabled):
+        """
+        Public method to set the enabled state of a breakpoint given by index.
+        
+        @param index index of the breakpoint (QModelIndex)
+        @param enabled flag giving the enabled state (boolean)
+        """
+        if index.isValid():
+            row = index.row()
+            col = 4
+            index1 = self.createIndex(row, col, self.breakpoints[row])
+            self.dataAboutToBeChanged.emit(index1, index1)
+            self.breakpoints[row][col] = enabled
+            self.dataChanged.emit(index1, index1)
+    
+    def deleteBreakPointByIndex(self, index):
+        """
+        Public method to set the values of a breakpoint given by index.
+        
+        @param index index of the breakpoint (QModelIndex)
+        """
+        if index.isValid():
+            row = index.row()
+            self.beginRemoveRows(QModelIndex(), row, row)
+            del self.breakpoints[row]
+            self.endRemoveRows()
+
+    def deleteBreakPoints(self, idxList):
+        """
+        Public method to delete a list of breakpoints given by their indexes.
+        
+        @param idxList list of breakpoint indexes (list of QModelIndex)
+        """
+        rows = []
+        for index in idxList:
+            if index.isValid():
+                rows.append(index.row())
+        rows.sort(reverse=True)
+        for row in rows:
+            self.beginRemoveRows(QModelIndex(), row, row)
+            del self.breakpoints[row]
+            self.endRemoveRows()
+
+    def deleteAll(self):
+        """
+        Public method to delete all breakpoints.
+        """
+        if self.breakpoints:
+            self.beginRemoveRows(QModelIndex(), 0, len(self.breakpoints) - 1)
+            self.breakpoints = []
+            self.endRemoveRows()
+
+    def getBreakPointByIndex(self, index):
+        """
+        Public method to get the values of a breakpoint given by index.
+        
+        @param index index of the breakpoint (QModelIndex)
+        @return breakpoint (list of seven values (filename, line number,
+            condition, temporary flag, enabled flag, ignore count))
+        """
+        if index.isValid():
+            return self.breakpoints[index.row()][:]  # return a copy
+        else:
+            return []
+
+    def getBreakPointIndex(self, fn, lineno):
+        """
+        Public method to get the index of a breakpoint given by filename and
+        line number.
+        
+        @param fn filename of the breakpoint (string)
+        @param lineno line number of the breakpoint (integer)
+        @return index (QModelIndex)
+        """
+        for row in range(len(self.breakpoints)):
+            bp = self.breakpoints[row]
+            if bp[0] == fn and bp[1] == lineno:
+                return self.createIndex(row, 0, self.breakpoints[row])
+        
+        return QModelIndex()
+    
+    def isBreakPointTemporaryByIndex(self, index):
+        """
+        Public method to test, if a breakpoint given by its index is temporary.
+        
+        @param index index of the breakpoint to test (QModelIndex)
+        @return flag indicating a temporary breakpoint (boolean)
+        """
+        if index.isValid():
+            return self.breakpoints[index.row()][3]
+        else:
+            return False

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