Added time span detection

src/main.c

@@ -14,6 +14,7 @@ int main(int argc, char *argv[])
 	gtk_widget_show(mainWindow->mainWindow);
 
 	mdiary_scan_to_store(argv[1], mainWindow->entryListStore);
+	mainWindow_set_meta_information(mainWindow, mdiary_get_time_earliest(), mdiary_get_time_latest());
 
 	gtk_main();
 

src/mainwindow.c

@@ -280,6 +280,8 @@ struct mainWindow *mainWindow_new()
 
 	mainWindow->filterSettings.time_start = 0;
 	mainWindow->filterSettings.time_end = -1;
+	mainWindow->time_earliest = 0;
+	mainWindow->time_latest   = 0;
 
 	gtk_builder_connect_signals(builder, NULL);
 
@@ -295,6 +297,20 @@ struct mainWindow *mainWindow_new()
 	return mainWindow;
 }
 
+/**
+ * @brief mainWindow_set_meta_information sets some meta info for a nice GUI. It also resets the search.
+ * @param mainWindow
+ * @param time_earliest is the reset value for the filter start date
+ * @param time_latest is the reset value for the filter end date
+ */
+void mainWindow_set_meta_information(struct mainWindow *mainWindow, guint time_earliest, guint time_latest)
+{
+	mainWindow->time_earliest = time_earliest;
+	mainWindow->time_latest   = time_latest;
+
+	mainWindow_clearSearch(NULL, mainWindow);
+}
+
 /**
  * @brief mainWindow_chooseWorkspaceClicked is called when the user clicks the Choose Workspace button.
  * @param widget N/A
@@ -464,12 +480,20 @@ void mainWindow_checkDate(GtkWidget *widget, gint event, gpointer user_data)
 void mainWindow_clearSearch(GtkWidget *widget, gpointer user_data)
 {
 	struct mainWindow *mainWindow = (struct mainWindow *)user_data;
+	GDateTime *datetime;
+	gchar *temp;
 
 	gtk_entry_set_text(GTK_ENTRY(mainWindow->searchEntry), "");
 
-	/**
-	 * These need to be set to oldest and newest after indexing date
-	 */
-	gtk_entry_set_text(GTK_ENTRY(mainWindow->dateStart), "2016-01-01");
-	gtk_entry_set_text(GTK_ENTRY(mainWindow->dateEnd), "2018-01-01");
+	datetime = g_date_time_new_from_unix_local(mainWindow->time_earliest);
+	temp = g_date_time_format(datetime, "%Y-%m-%d");
+	gtk_entry_set_text(GTK_ENTRY(mainWindow->dateStart), temp);
+	g_date_time_unref(datetime);
+	g_free(temp);
+
+	datetime = g_date_time_new_from_unix_local(mainWindow->time_latest);
+	temp = g_date_time_format(datetime, "%Y-%m-%d");
+	gtk_entry_set_text(GTK_ENTRY(mainWindow->dateEnd), temp);
+	g_date_time_unref(datetime);
+	g_free(temp);
 }

src/mainwindow.h

@@ -28,6 +28,9 @@ struct mainWindow {
 	GtkWidget *selectedDateEntry;
 	GtkTreeModelFilter *entryListFiltered;
 
+	guint time_earliest;
+	guint time_latest;
+
 	struct filterSettings {
 		guint time_start;
 		guint time_end;
@@ -39,6 +42,7 @@ struct mainWindow {
 };
 
 struct mainWindow *mainWindow_new();
+void mainWindow_set_meta_information(struct mainWindow *mainWindow, guint time_earliest, guint time_latest);
 
 /* Slots */
 void mainWindow_showPopover(GtkWidget *widget, GdkEvent *event, gpointer user_data);

src/mdiary.c

@@ -1,5 +1,8 @@
 #include "mdiary.h"
 
+static gint64 time_earliest;
+static gint64 time_latest;
+
 /**
  * @brief The dateFormats struct contains regex/date-info pairs to parse different date formats.
  */
@@ -154,7 +157,7 @@ static gboolean mdiary_is_empty_line(gchar *string)
 {
 	GRegex *regex;
 	GMatchInfo *match_info;
-	gchar *ret = 0;
+	gboolean ret = 0;
 
 	regex = g_regex_new("^\\s*$", G_REGEX_RAW, 0, NULL);
 	if (g_regex_match(regex, string, 0, &match_info) &&
@@ -302,6 +305,11 @@ static void mdiary_add_file_to_store(gchar *filename, GtkListStore *entryListSto
 				  summary,
 				  text->str);
 
+	if (g_date_time_to_unix(datetime) > time_latest)
+		time_latest = g_date_time_to_unix(datetime);
+	if (g_date_time_to_unix(datetime) < time_earliest)
+		time_earliest = g_date_time_to_unix(datetime);
+
 	g_input_stream_close(G_INPUT_STREAM(dstream), NULL, NULL);
 	g_input_stream_close(G_INPUT_STREAM(stream), NULL, NULL);
 	g_string_free(text, 0);
@@ -347,9 +355,30 @@ static void mdiary_recurse_and_collect(gchar *base_dir, GtkListStore *entryListS
  */
 void mdiary_scan_to_store(gchar *base_dir, GtkListStore *entryListStore)
 {
+	time_earliest = G_MAXINT64;
+	time_latest   = 0;
 	mdiary_recurse_and_collect(base_dir, entryListStore, 5);
 }
 
+/**
+ * @brief mdiary_get_time_earliest getter function for time_earliest. Call mdiary_scan_to_store before using.
+ * @return time_earliest
+ */
+guint mdiary_get_time_earliest(void)
+{
+	return time_earliest;
+}
+
+/**
+ * @brief mdiary_get_time_earliest getter function for time_latest. Call mdiary_scan_to_store before using.
+ * @return time_latest
+ */
+guint mdiary_get_time_latest(void)
+{
+	return time_latest;
+}
+
+
 /**
  * @brief mainWindow_taglist_to_string concatenates a list with commas
  * @param list is a GList of strings to concatenate

src/mdiary.h

@@ -26,5 +26,7 @@ void mdiary_add_entry_to_store(GtkListStore *entryListStore,
 			       gchar *text);
 GDateTime *mdiary_get_date_from_string_ext(gchar *string, gchar *prefix, gchar *suffix);
 GDateTime *mdiary_get_date_from_string(gchar *string);
+guint mdiary_get_time_earliest(void);
+guint mdiary_get_time_latest(void);
 
 #endif /* MDIARY_H */