public void PopUndo() { if (UndoStack.Count > 0) // ensures that there is something to be popped { CmdCollection from = UndoStack.Pop(); // pops the top list off of the undo stack -> all of the contents will be undone /* Executes all commands in the popped list * Pushes the inverse of the popped actions onto the redo stack */ RedoStack.Push(new CmdCollection(from.ExecuteAll())); } }
public void PopRedo() { if (RedoStack.Count > 0) // ensures that there is something to be popped { CmdCollection from = RedoStack.Pop(); /* Executes all commands in the popped list * Pushes the inverse of the popped actions onto the redo stack */ UndoStack.Push(new CmdCollection(from.ExecuteAll())); } }
public CmdCollection ExecuteAll() { CmdCollection inverses = new CmdCollection(); // Will contain the opposite operations to the ones that are currently contained in this object foreach (IUndoRedoCmd cmd in this.cmds) { /* Adds the inverse operations to a NEW CmdCollection * This will be pushed onto the opposite stack from where the current operation came from */ inverses.cmds.Add(cmd.Execute()); } return(inverses); }
public CmdCollection(CmdCollection from) { /* Copy constructor * simply copies over the list in 'from' */ this.cmds = from.cmds; }
public void PushUndo(CmdCollection PropertyCollection) { UndoStack.Push(PropertyCollection); // Pushes the restoring collection on the undo stack RedoStack.Clear(); // Clears the redo stack -> ensures that operations cannot be restored after preceding undo operations have been restored }
public CmdCollection ExecuteAll() { CmdCollection inverses = new CmdCollection(); // Will contain the opposite operations to the ones that are currently contained in this object foreach (IUndoRedoCmd cmd in this.cmds) { /* Adds the inverse operations to a NEW CmdCollection * This will be pushed onto the opposite stack from where the current operation came from */ inverses.cmds.Add(cmd.Execute()); } return inverses; }
public CmdCollection(CmdCollection from) { /* Copy constructor * simply copies over the list in 'from' */ this.cmds = from.cmds; }
public void PushUndo(CmdCollection PropertyCollection) { UndoStack.Push(PropertyCollection); // Pushes the restoring collection on the undo stack RedoStack.Clear(); // Clears the redo stack -> ensures that operations cannot be restored after preceding undo operations have been restored }
private void color_changing(object sender, bool custom) { ColorDialog SelectColor = new ColorDialog(); if (custom) // user wants to select their own color -> prompts color dialogue { if (SelectColor.ShowDialog() != DialogResult.OK) return; } else // the user chose one of the pre-selected colors { if (sender.ToString() == "Reset") SelectColor.Color = System.Drawing.Color.FromArgb(-1); if (sender.ToString() == "Green") SelectColor.Color = System.Drawing.Color.FromArgb(192, 255, 192); else if (sender.ToString() == "Red") SelectColor.Color = System.Drawing.Color.FromArgb(255, 128, 128); else if (sender.ToString() == "Orange") SelectColor.Color = System.Drawing.Color.FromArgb(255, 192, 128); else if (sender.ToString() == "Grey") SelectColor.Color = System.Drawing.Color.FromArgb(131, 130, 120); } DataGridViewSelectedCellCollection CellsChanging = dataGridView1.SelectedCells; // Gets the collection of selected cells CmdCollection BGRestore = new CmdCollection(); if (CellsChanging != null) // Ensures that there is at least one selected cell { foreach (DataGridViewCell cell in CellsChanging) // Foreach cell that has been selected, notify the spreadsheet of that cells property change { SpreadsheetCell Changing = mainSS[cell.RowIndex, cell.ColumnIndex]; RestoreBGColor newRestore = new RestoreBGColor(Changing, Changing.BGColor); Changing.BGColor = SelectColor.Color.ToArgb(); // Converts the chosen color to ARBG integer format BGRestore.Add(newRestore); } mainSS.PushUndo(BGRestore); // Adds the new restore collection undoToolStripMenuItem.Text = "Undo - " + mainSS.PeekUndo; // Tells the UI which property will be undone redoToolStripMenuItem.Enabled = false; redoToolStripMenuItem.Text = "Redo"; } }