Struct gtk4::EntryCompletion[][src]

pub struct EntryCompletion(_);
Expand description

EntryCompletion is an auxiliary object to provide completion functionality for Entry.

It implements the CellLayout interface, to allow the user to add extra cells to the TreeView with completion matches.

“Completion functionality” means that when the user modifies the text in the entry, EntryCompletion checks which rows in the model match the current content of the entry, and displays a list of matches. By default, the matching is done by comparing the entry text case-insensitively against the text column of the model (see set_text_column()), but this can be overridden with a custom match function (see set_match_func()).

When the user selects a completion, the content of the entry is updated. By default, the content of the entry is replaced by the text column of the model, but this can be overridden by connecting to the signal::EntryCompletion::match-selected signal and updating the entry in the signal handler. Note that you should return true from the signal handler to suppress the default behaviour.

To add completion functionality to an entry, use EntryExt::set_completion().

EntryCompletion uses a TreeModelFilter model to represent the subset of the entire model that is currently matching. While the EntryCompletion signals signal::EntryCompletion::match-selected and signal::EntryCompletion::cursor-on-match take the original model and an iter pointing to that model as arguments, other callbacks and signals (such as GtkCellLayoutDataFunc or signal::CellArea::apply-attributes)] will generally take the filter model as argument. As long as you are only calling TreeModelExtManual::get(), this will make no difference to you. If for some reason, you need the original model, use TreeModelFilterExt::model(). Don’t forget to use TreeModelFilterExt::convert_iter_to_child_iter() to obtain a matching iter.

Implements

glib::ObjectExt, BuildableExt, CellLayoutExt, CellLayoutExtManual

Implementations

Creates a new EntryCompletion object.

Returns

A newly created EntryCompletion object

Creates a new EntryCompletion object using the specified area.

The CellArea is used to layout cells in the underlying TreeViewColumn for the drop-down menu.

area

the CellArea used to layout cells

Returns

A newly created EntryCompletion object

Creates a new builder-pattern struct instance to construct EntryCompletion objects.

This method returns an instance of EntryCompletionBuilder which can be used to create EntryCompletion objects.

Requests a completion operation, or in other words a refiltering of the current list with completions, using the current key.

The completion list view will be updated accordingly.

Computes the common prefix that is shared by all rows in self that start with key.

If no row matches key, None will be returned. Note that a text column must have been set for this function to work, see set_text_column() for details.

key

The text to complete for

Returns

The common prefix all rows starting with key or None if no row matches key.

Get the original text entered by the user that triggered the completion or None if there’s no completion ongoing.

Returns

the prefix for the current completion

Returns whether the common prefix of the possible completions should be automatically inserted in the entry.

Returns

true if inline completion is turned on

Returns true if inline-selection mode is turned on.

Returns

true if inline-selection mode is on

Returns the minimum key length as set for self.

Returns

The currently used minimum key length

Returns the model the EntryCompletion is using as data source.

Returns None if the model is unset.

Returns

A TreeModel, or None if none is currently being used

Returns whether the completions should be presented in a popup window.

Returns

true if popup completion is turned on

Returns whether the completion popup window will be resized to the width of the entry.

Returns

true if the popup window will be resized to the width of the entry

Returns whether the completion popup window will appear even if there is only a single match.

Returns

true if the popup window will appear regardless of the number of matches

Returns the column in the model of self to get strings from.

Returns

the column containing the strings

Requests a prefix insertion.

Sets whether the common prefix of the possible completions should be automatically inserted in the entry.

inline_completion

true to do inline completion

Sets whether it is possible to cycle through the possible completions inside the entry.

inline_selection

true to do inline selection

Sets the match function for self to be func.

The match function is used to determine if a row should or should not be in the completion list.

func

the EntryCompletionMatchFunc to use

func_data

user data for func

func_notify

destroy notify for func_data.

Requires the length of the search key for self to be at least length.

This is useful for long lists, where completing using a small key takes a lot of time and will come up with meaningless results anyway (ie, a too large dataset).

length

the minimum length of the key in order to start completing

Sets the model for a EntryCompletion.

If self already has a model set, it will remove it before setting the new model. If model is None, then it will unset the model.

model

the TreeModel

Sets whether the completions should be presented in a popup window.

true to do popup completion

Sets whether the completion popup window will be resized to be the same width as the entry.

true to make the width of the popup the same as the entry

Sets whether the completion popup window will appear even if there is only a single match.

You may want to set this to false if you are using property::EntryCompletion::inline-completion.

true if the popup should appear even for a single match

Convenience function for setting up the most used case of this code: a completion list with just strings.

This function will set up self to have a list displaying all (and just) strings in the completion list, and to get those strings from column in the model of self.

This functions creates and adds a CellRendererText for the selected column. If you need to set the text column, but don’t want the cell renderer, use g_object_set() to set the property::EntryCompletion::text-column property directly.

column

the column in the model of self to get strings from

The CellArea used to layout cell renderers in the treeview column.

If no area is specified when creating the entry completion with with_area(), a horizontally oriented CellAreaBox will be used.

Emitted when a match from the cursor is on a match of the list.

The default behaviour is to replace the contents of the entry with the contents of the text column in the row pointed to by iter.

Note that model is the model that was passed to set_model().

model

the TreeModel containing the matches

iter

a TreeIter positioned at the selected match

Returns

true if the signal has been handled

Emitted when the inline autocompletion is triggered.

The default behaviour is to make the entry display the whole prefix and select the newly inserted part.

Applications may connect to this signal in order to insert only a smaller part of the prefix into the entry - e.g. the entry used in the FileChooser inserts only the part of the prefix up to the next ‘/’.

prefix

the common prefix of all possible completions

Returns

true if the signal has been handled

Emitted when a match from the list is selected.

The default behaviour is to replace the contents of the entry with the contents of the text column in the row pointed to by iter.

Note that model is the model that was passed to set_model().

model

the TreeModel containing the matches

iter

a TreeIter positioned at the selected match

Returns

true if the signal has been handled

Emitted when the filter model has zero number of rows in completion_complete method.

In other words when EntryCompletion is out of suggestions.

Gets the entry self has been attached to.

Returns

The entry self has been attached to

Trait Implementations

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