Gtk4-tutorial/src/tfetextview/tfetextview_doc.md

TfeTextView

TfeTextView -- Child widget of GtkTextView. It holds GFile the contents of GtkTextBuffer correponds to.

Functions

• GFile *tfe_text_view_get_file ()
• void tfe_text_view_open ()
• void tfe_text_view_save ()
• void tfe_text_view_saveas ()
• GtkWidget *tfe_text_view_new_with_file ()
• GtkWidget *tfe_text_view_new ()

Signals

• void change-file
• void open-response

Types and Values

• TfeTextView
• TfeTextViewClass
• TfeTextViewOpenResponseType

Object Hierarchy

GObject
+--GInitiallyUnowned
   +--GtkWidget
      +--GtkTextView
         +--TfeTextView

Includes

#include <gtk/gtk.h>

Description

TfeTextView holds GFile the contents of GtkTextBuffer corresponds to. File manipulation functions have been added to this object.

Functions

tfe_text_view_get_file ()

GFile *
tfe_text_view_get_file (TfeTextView *tv);

Returns the copy of the GFile in the TfeTextView.

Parameters

• tv: a TfeTextView

tfe_text_view_open ()

void
tfe_text_view_open (TfeTextView *tv, GtkWidget *win);

Just shows a GtkFileChooserDialog so that a user can choose a file to read. This function doesn't do any I/O operations. They are done by the signal handler connected to the response signal emitted by GtkFileChooserDialog. Therefore the caller can't know the I/O status directly from the function. Instead, the status is informed by open-response signal. The caller needs to set a handler to this signal in advance.

parameters

• tv: a TfeTextView
• win: the top level window of the TfeTextView

tfe_text_view_save ()

void
tfe_text_view_save (TfeTextView *tv);

Saves the content of a TfeTextView to a file. If tv holds a GFile, it is used. Otherwise, this function calls GtkFileChosserDialog so that a user can choose a file to save.

Parameters

• tv: a TfeTextView

tfe_text_view_saveas ()

void
tfe_text_view_saveas (TfeTextView *tv);

Saves the content of a TfeTextView to a file. This function calls GtkFileChosserDialog so that a user can choose a file to save.

Parameters

• tv: a TfeTextView

tfe_text_view_new_with_file ()

GtkWidget *
tfe_text_view_new_with_file (GFile *file);

Creates a new TfeTextView and read the contents of the file and set it to the GtkTextBuffer corresponds to the newly created TfeTextView. Then returns the TfeTextView as GtkWidget. If I/O error happens, it returns NULL.

Parameters

• file: a GFile

Returns

• a new TfeTextView.

tfe_text_view_new ()

GtkWidget *
tfe_text_view_new (void);

Creates a new TfeTextView and returns the TfeTextView as GtkWidget.

Returns

• a new TfeTextView.

Types and Values

TfeTextView

typedef struct _TfeTextView TfeTextView
struct _TfeTextView
{
  GtkTextView parent;
  GFile *file;
};

The members of this structure are not allowed to be accessed by any outer objects. If you want to obtain GFile, use tfe_text_view_get_file.

TfeTextViewClass

typedef struct {
  GtkTextViewClass parent_class;
} TfeTextViewClass;

No member is added because TfeTextView is a final type object.

enum TfeTextViewOpenResponseType

Predefined values for the response id given by open-response signal.

Members:

• TFE_OPEN_RESPONSE_SUCCESS: The file is successfully opened.
• TFE_OPEN_RESPONSE_CANCEL: Reading file is canceled by the user.
• TFE_OPEN_RESPONSE_ERROR: An error happened during the opening or reading process.

Signals

change-file

void
user_function (TfeTextView *tv,
               gpointer user_data)

Emitted when the GFile in the TfeTextView object is changed. The signal is emitted when:

• a new file is read
• the contents is saved as a different pathname
• an error occured during I/O operation, and GFile removed as a result.

open-response

void
user_function (TfeTextView *tv,
               TfeTextViewOpenResponseType response-id,
               gpointer user_data)

Emitted after the user called tfe_text_view_open. This signal informs the status of file opening and reading.