private LempDemoPanel AddNewTextEditor(string title, string initialText = "")
{
var tab = new TabPage(title);
// When a tab page gets the focus, move the focus to the editor control
// instead when it gets the Enter (focus) event. I use BeginInvoke
// because changing the focus directly in the Enter handler doesn't
// work.
tab.Enter +=
new EventHandler((sender, e) => {
var page = ((TabPage)sender);
page.BeginInvoke(new Action <TabPage>(p => p.Controls[0].Focus()), page);
});
var panel = new LempDemoPanel(_editorSettings);
_editorSettings = panel.EditorSettings;
panel.Dock = System.Windows.Forms.DockStyle.Fill;
tab.Controls.Add(panel);
fileTabs.Controls.Add(tab);
panel.Editor.Text = initialText;
panel.SetModifiedFlag(false);
return(panel);
}
/// <summary>Performs an action encapsulated in IEditAction.</summary>
/// <remarks>
/// There is an implementation of IEditAction for every action that
/// the user can invoke using a shortcut key (arrow keys, Ctrl+X, etc.)
/// The editor control doesn't provide a public funciton to perform one
/// of these actions directly, so I wrote DoEditAction() based on the
/// code in TextArea.ExecuteDialogKey(). You can call ExecuteDialogKey
/// directly, but it is more fragile because it takes a Keys value (e.g.
/// Keys.Left) instead of the action to perform.
/// <para/>
/// Clipboard commands could also be done by calling methods in
/// editor.ActiveTextAreaControl.TextArea.ClipboardHandler.
/// </remarks>
private void DoEditAction(LempDemoPanel panel, ICSharpCode.TextEditor.Actions.IEditAction action)
{
TextEditorControl editor = panel.Editor;
if (editor != null && action != null)
{
var area = editor.ActiveTextAreaControl.TextArea;
editor.BeginUpdate();
try {
lock (editor.Document) {
action.Execute(area);
if (area.SelectionManager.HasSomethingSelected && area.AutoClearSelection /*&& caretchanged*/)
{
if (area.Document.TextEditorProperties.DocumentSelectionMode == DocumentSelectionMode.Normal)
{
area.SelectionManager.ClearSelection();
}
}
}
} finally {
editor.EndUpdate();
area.Caret.UpdateCaretPosition();
}
}
}
private void menuFileSave_Click(object sender, EventArgs e)
{
LempDemoPanel panel = ActivePage;
if (panel != null)
{
DoSave(panel);
}
}
/// <summary>Toggles whether the editor control is split in two parts.</summary>
/// <remarks>Exercise for the reader: modify TextEditorControl and
/// TextAreaControl so it shows a little "splitter stub" like you see in
/// other apps, that allows the user to split the text editor by dragging
/// it.</remarks>
private void menuSplitTextArea_Click(object sender, EventArgs e)
{
LempDemoPanel editor = ActivePage;
if (editor == null)
{
return;
}
editor.FocusedEditor.Split();
}
private void menuEditReplace_Click(object sender, EventArgs e)
{
LempDemoPanel panel = ActivePage;
if (panel == null)
{
return;
}
_findForm.ShowFor(panel.FocusedEditor, true);
}
private bool DoSave(LempDemoPanel panel)
{
if (string.IsNullOrEmpty(panel.Editor.FileName))
{
return(DoSaveAs(panel));
}
else
{
try {
panel.Editor.SaveFile(panel.Editor.FileName);
panel.SetModifiedFlag(false);
return(true);
} catch (Exception ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
return(false);
}
}
}
private bool DoSaveAs(LempDemoPanel panel)
{
TextEditorControl editor = panel.Editor;
saveFileDialog.FileName = editor.FileName;
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
try {
editor.SaveFile(saveFileDialog.FileName);
panel.ChooseHighlighter(); // fix syntax highlighting
panel.Parent.Text = Path.GetFileName(editor.FileName);
panel.SetModifiedFlag(false);
return(true);
} catch (Exception ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
}
}
return(false);
}
private bool DoSaveAs(LempDemoPanel panel)
{
TextEditorControl editor = panel.Editor;
saveFileDialog.FileName = editor.FileName;
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
try {
editor.SaveFile(saveFileDialog.FileName);
editor.Parent.Text = Path.GetFileName(editor.FileName);
panel.SetModifiedFlag(false);
// The syntax highlighting strategy doesn't change
// automatically, so do it manually.
editor.Document.HighlightingStrategy =
HighlightingStrategyFactory.CreateHighlightingStrategyForFile(editor.FileName);
return(true);
} catch (Exception ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
}
}
return(false);
}
private LempDemoPanel AddNewTextEditor(string title, string initialText = "")
{
var tab = new TabPage(title);
// When a tab page gets the focus, move the focus to the editor control
// instead when it gets the Enter (focus) event. I use BeginInvoke
// because changing the focus directly in the Enter handler doesn't
// work.
tab.Enter +=
new EventHandler((sender, e) => {
var page = ((TabPage)sender);
page.BeginInvoke(new Action<TabPage>(p => p.Controls[0].Focus()), page);
});
var panel = new LempDemoPanel(_editorSettings);
_editorSettings = panel.EditorSettings;
panel.Dock = System.Windows.Forms.DockStyle.Fill;
tab.Controls.Add(panel);
fileTabs.Controls.Add(tab);
panel.Editor.Text = initialText;
return panel;
}
private void RemoveTextEditor(LempDemoPanel panel)
{
((TabControl)panel.Parent.Parent).Controls.Remove(panel.Parent);
}
/// <summary>Performs an action encapsulated in IEditAction.</summary>
/// <remarks>
/// There is an implementation of IEditAction for every action that
/// the user can invoke using a shortcut key (arrow keys, Ctrl+X, etc.)
/// The editor control doesn't provide a public funciton to perform one
/// of these actions directly, so I wrote DoEditAction() based on the
/// code in TextArea.ExecuteDialogKey(). You can call ExecuteDialogKey
/// directly, but it is more fragile because it takes a Keys value (e.g.
/// Keys.Left) instead of the action to perform.
/// <para/>
/// Clipboard commands could also be done by calling methods in
/// editor.ActiveTextAreaControl.TextArea.ClipboardHandler.
/// </remarks>
private void DoEditAction(LempDemoPanel panel, ICSharpCode.TextEditor.Actions.IEditAction action)
{
TextEditorControl editor = panel.Editor;
if (editor != null && action != null) {
var area = editor.ActiveTextAreaControl.TextArea;
editor.BeginUpdate();
try {
lock (editor.Document) {
action.Execute(area);
if (area.SelectionManager.HasSomethingSelected && area.AutoClearSelection /*&& caretchanged*/) {
if (area.Document.TextEditorProperties.DocumentSelectionMode == DocumentSelectionMode.Normal) {
area.SelectionManager.ClearSelection();
}
}
}
} finally {
editor.EndUpdate();
area.Caret.UpdateCaretPosition();
}
}
}
private bool DoSaveAs(LempDemoPanel panel)
{
TextEditorControl editor = panel.Editor;
saveFileDialog.FileName = editor.FileName;
if (saveFileDialog.ShowDialog() == DialogResult.OK) {
try {
editor.SaveFile(saveFileDialog.FileName);
editor.Parent.Text = Path.GetFileName(editor.FileName);
panel.SetModifiedFlag(false);
// The syntax highlighting strategy doesn't change
// automatically, so do it manually.
editor.Document.HighlightingStrategy =
HighlightingStrategyFactory.CreateHighlightingStrategyForFile(editor.FileName);
return true;
} catch (Exception ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
}
}
return false;
}
private bool DoSave(LempDemoPanel panel)
{
if (string.IsNullOrEmpty(panel.Editor.FileName))
return DoSaveAs(panel);
else {
try {
panel.Editor.SaveFile(panel.Editor.FileName);
panel.SetModifiedFlag(false);
return true;
} catch (Exception ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
return false;
}
}
}
private void RemoveTextEditor(LempDemoPanel panel)
{
((TabControl)panel.Parent.Parent).Controls.Remove(panel.Parent);
}
