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| GtkSourceBuffer * | buffer | Read / Write / Construct Only |
| gboolean | highlight | Read / Write / Construct |
| GtkSourceStyle * | match-style | Read / Write / Construct |
| int | occurrences-count | Read |
| gpointer | regex-error | Read |
| GtkSourceSearchSettings * | settings | Read / Write / Construct Only |
A GtkSourceSearchContext is used for the search and replace in a GtkSourceBuffer. The search settings are represented by a GtkSourceSearchSettings object. There can be a many-to-many relationship between buffers and search settings, with the search contexts in-between: a search settings object can be shared between several search contexts; and a buffer can contain several search contexts at the same time.
The total number of search occurrences can be retrieved with
gtk_source_search_context_get_occurrences_count(). To know the position of a
certain match, use gtk_source_search_context_get_occurrence_position().
The buffer is scanned asynchronously, so it doesn't block the user interface. For each search, the buffer is scanned at most once. After that, navigating through the occurrences doesn't require to re-scan the buffer entirely.
To search forward, use gtk_source_search_context_forward() or
gtk_source_search_context_forward_async() for the asynchronous version.
The backward search is done similarly. To replace a search match, or all
matches, use gtk_source_search_context_replace() and
gtk_source_search_context_replace_all().
The search occurrences are highlighted by default. To disable it, use
gtk_source_search_context_set_highlight(). You can enable the search
highlighting for several GtkSourceSearchContexts attached to the
same buffer. Moreover, each of those GtkSourceSearchContexts can
have a different text style associated. Use
gtk_source_search_context_set_match_style() to specify the GtkSourceStyle
to apply on search matches.
Note that the “highlight” and “match-style” properties are in the GtkSourceSearchContext class, not GtkSourceSearchSettings. Appearance settings should be tied to one, and only one buffer, as different buffers can have different style scheme associated (a GtkSourceSearchSettings object can be bound indirectly to several buffers).
The concept of "current match" doesn't exist yet. A way to highlight differently the current match is to select it.
A search occurrence's position doesn't depend on the cursor position or other parameters. Take for instance the buffer "aaaa" with the search text "aa". The two occurrences are at positions [0:2] and [2:4]. If you begin to search at position 1, you will get the occurrence [2:4], not [1:3]. This is a prerequisite for regular expression searches. The pattern ".*" matches the entire line. If the cursor is at the middle of the line, you don't want the rest of the line as the occurrence, you want an entire line. (As a side note, regular expression searches can also match multiple lines.)
In the GtkSourceView source code, there is an example of how to use the search and replace API: see the tests/test-search.c file. It is a mini application for the search and replace, with a basic user interface.
GtkSourceSearchContext * gtk_source_search_context_new (GtkSourceBuffer *buffer,GtkSourceSearchSettings *settings);
Creates a new search context, associated with buffer
, and customized with
settings
. If settings
is NULL, a new GtkSourceSearchSettings object will
be created, that you can retrieve with
gtk_source_search_context_get_settings().
Since: 3.10
GtkSourceBuffer *
gtk_source_search_context_get_buffer (GtkSourceSearchContext *search);
Since: 3.10
GtkSourceSearchSettings *
gtk_source_search_context_get_settings
(GtkSourceSearchContext *search);
Since: 3.10
gboolean
gtk_source_search_context_get_highlight
(GtkSourceSearchContext *search);
Since: 3.10
void gtk_source_search_context_set_highlight (GtkSourceSearchContext *search,gboolean highlight);
Enables or disables the search occurrences highlighting.
Since: 3.10
GtkSourceStyle *
gtk_source_search_context_get_match_style
(GtkSourceSearchContext *search);
Since: 3.16
void gtk_source_search_context_set_match_style (GtkSourceSearchContext *search,GtkSourceStyle *match_style);
Set the style to apply on search matches. If match_style
is NULL, default
theme's scheme 'match-style' will be used.
To enable or disable the search highlighting, use
gtk_source_search_context_set_highlight().
Since: 3.16
gint
gtk_source_search_context_get_occurrences_count
(GtkSourceSearchContext *search);
Gets the total number of search occurrences. If the buffer is not already fully scanned, the total number of occurrences is unknown, and -1 is returned.
Since: 3.10
gint gtk_source_search_context_get_occurrence_position (GtkSourceSearchContext *search,const GtkTextIter *match_start,const GtkTextIter *match_end);
Gets the position of a search occurrence. If the buffer is not already fully
scanned, the position may be unknown, and -1 is returned. If 0 is returned,
it means that this part of the buffer has already been scanned, and that
match_start
and match_end
don't delimit an occurrence.
the position of the search occurrence. The first occurrence has the
position 1 (not 0). Returns 0 if match_start
and match_end
don't delimit
an occurrence. Returns -1 if the position is not yet known.
Since: 3.10
gboolean gtk_source_search_context_forward (GtkSourceSearchContext *search,const GtkTextIter *iter,GtkTextIter *match_start,GtkTextIter *match_end,gboolean *has_wrapped_around);
Synchronous forward search. It is recommended to use the asynchronous
functions instead, to not block the user interface. However, if you are sure
that the buffer
is small, this function is more convenient to use.
If the “wrap-around” property is FALSE, this function
doesn't try to wrap around.
The has_wrapped_around
out parameter is set independently of whether a match
is found. So if this function returns FALSE, has_wrapped_around
will have
the same value as the “wrap-around” property.
Since: 4.0
void gtk_source_search_context_forward_async (GtkSourceSearchContext *search,const GtkTextIter *iter,GCancellable *cancellable,GAsyncReadyCallback callback,gpointer user_data);
The asynchronous version of gtk_source_search_context_forward().
See the documentation of gtk_source_search_context_forward() for more
details.
See the GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback
will only be called if
cancellable
was not NULL. gtk_source_search_context_forward_async() takes
ownership of cancellable
, so you can unref it after calling this function.
search |
||
iter |
start of search. |
|
cancellable |
a GCancellable, or |
[nullable] |
callback |
a GAsyncReadyCallback to call when the operation is finished. |
|
user_data |
the data to pass to the |
Since: 3.10
gboolean gtk_source_search_context_forward_finish (GtkSourceSearchContext *search,GAsyncResult *result,GtkTextIter *match_start,GtkTextIter *match_end,gboolean *has_wrapped_around,GError **error);
Finishes a forward search started with
gtk_source_search_context_forward_async().
See the documentation of gtk_source_search_context_forward() for more
details.
search |
||
result |
a GAsyncResult. |
|
match_start |
return location for start of match, or |
[out][optional] |
match_end |
return location for end of match, or |
[out][optional] |
has_wrapped_around |
return location to know whether the
search has wrapped around, or |
[out][optional] |
error |
Since: 4.0
gboolean gtk_source_search_context_backward (GtkSourceSearchContext *search,const GtkTextIter *iter,GtkTextIter *match_start,GtkTextIter *match_end,gboolean *has_wrapped_around);
Synchronous backward search. It is recommended to use the asynchronous
functions instead, to not block the user interface. However, if you are sure
that the buffer
is small, this function is more convenient to use.
If the “wrap-around” property is FALSE, this function
doesn't try to wrap around.
The has_wrapped_around
out parameter is set independently of whether a match
is found. So if this function returns FALSE, has_wrapped_around
will have
the same value as the “wrap-around” property.
Since: 4.0
void gtk_source_search_context_backward_async (GtkSourceSearchContext *search,const GtkTextIter *iter,GCancellable *cancellable,GAsyncReadyCallback callback,gpointer user_data);
The asynchronous version of gtk_source_search_context_backward().
See the documentation of gtk_source_search_context_backward() for more
details.
See the GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback
will only be called if
cancellable
was not NULL. gtk_source_search_context_backward_async() takes
ownership of cancellable
, so you can unref it after calling this function.
search |
||
iter |
start of search. |
|
cancellable |
a GCancellable, or |
[nullable] |
callback |
a GAsyncReadyCallback to call when the operation is finished. |
|
user_data |
the data to pass to the |
Since: 3.10
gboolean gtk_source_search_context_backward_finish (GtkSourceSearchContext *search,GAsyncResult *result,GtkTextIter *match_start,GtkTextIter *match_end,gboolean *has_wrapped_around,GError **error);
Finishes a backward search started with
gtk_source_search_context_backward_async().
See the documentation of gtk_source_search_context_backward() for more
details.
search |
||
result |
a GAsyncResult. |
|
match_start |
return location for start of match, or |
[out][optional] |
match_end |
return location for end of match, or |
[out][optional] |
has_wrapped_around |
return location to know whether the
search has wrapped around, or |
[out][optional] |
error |
Since: 4.0
gboolean gtk_source_search_context_replace (GtkSourceSearchContext *search,GtkTextIter *match_start,GtkTextIter *match_end,const gchar *replace,gint replace_length,GError **error);
Replaces a search match by another text. If match_start
and match_end
doesn't correspond to a search match, FALSE is returned.
match_start
and match_end
iters are revalidated to point to the replacement
text boundaries.
For a regular expression replacement, you can check if replace
is valid by
calling g_regex_check_replacement(). The replace
text can contain
backreferences; read the g_regex_replace() documentation for more details.
search |
||
match_start |
the start of the match to replace. |
|
match_end |
the end of the match to replace. |
|
replace |
the replacement text. |
|
replace_length |
the length of |
|
error |
Since: 4.0
guint gtk_source_search_context_replace_all (GtkSourceSearchContext *search,const gchar *replace,gint replace_length,GError **error);
Replaces all search matches by another text. It is a synchronous function, so it can block the user interface.
For a regular expression replacement, you can check if replace
is valid by
calling g_regex_check_replacement(). The replace
text can contain
backreferences; read the g_regex_replace() documentation for more details.
search |
||
replace |
the replacement text. |
|
replace_length |
the length of |
|
error |
Since: 3.10
GError *
gtk_source_search_context_get_regex_error
(GtkSourceSearchContext *search);
Regular expression patterns must follow certain rules. If “search-text” breaks a rule, the error can be retrieved with this function. The error domain is G_REGEX_ERROR.
Free the return value with g_error_free().
Since: 3.10
“buffer” property“buffer” GtkSourceBuffer *
The GtkSourceBuffer associated to the search context.
Owner: GtkSourceSearchContext
Flags: Read / Write / Construct Only
Since: 3.10
“highlight” property“highlight” gboolean
Highlight the search occurrences.
Owner: GtkSourceSearchContext
Flags: Read / Write / Construct
Default value: TRUE
Since: 3.10
“match-style” property“match-style” GtkSourceStyle *
A GtkSourceStyle, or NULL for theme's scheme default style.
Owner: GtkSourceSearchContext
Flags: Read / Write / Construct
Since: 299.2
“occurrences-count” property “occurrences-count” int
The total number of search occurrences. If the search is disabled, the value is 0. If the buffer is not already fully scanned, the value is -1.
Owner: GtkSourceSearchContext
Flags: Read
Allowed values: >= -1
Default value: 0
Since: 3.10
“regex-error” property“regex-error” gpointer
If the regex search pattern doesn't follow all the rules, this
GError property will be set. If the pattern is valid, the value is
NULL.
Free with g_error_free().
Owner: GtkSourceSearchContext
Flags: Read
Since: 3.10
“settings” property“settings” GtkSourceSearchSettings *
The GtkSourceSearchSettings associated to the search context.
This property is construct-only since version 4.0.
Owner: GtkSourceSearchContext
Flags: Read / Write / Construct Only
Since: 3.10