Return GdkColor via out parameter rather than return value

[geany-mirror.git] / src / msgwindow.c

/*
 *      msgwindow.c - this file is part of Geany, a fast and lightweight IDE
 *
 *      Copyright 2005-2012 Enrico Tröger <enrico(dot)troeger(at)uvena(dot)de>
 *      Copyright 2006-2012 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com>
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License along
 *      with this program; if not, write to the Free Software Foundation, Inc.,
 *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/**
 * @file msgwindow.h
 * Message window functions (status, compiler, messages windows).
 * Also compiler error message parsing and grep file and line parsing.
 *
 * @see GeanyMainWidgets::message_window_notebook to append a new notebook page.
 **/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "msgwindow.h"

#include "build.h"
#include "document.h"
#include "callbacks.h"
#include "filetypes.h"
#include "keybindings.h"
#include "main.h"
#include "navqueue.h"
#include "prefs.h"
#include "support.h"
#include "ui_utils.h"
#include "utils.h"
#include "vte.h"

#include <string.h>
#include <stdlib.h>
#include <time.h>

#include <gdk/gdkkeysyms.h>


/* used for parse_file_line */
typedef struct
{
        const gchar *string;    /* line data */
        const gchar *pattern;   /* pattern to split the error message into some fields */
        guint min_fields;               /* used to detect errors after parsing */
        guint line_idx;                 /* idx of the field where the line is */
        gint file_idx;                  /* idx of the field where the filename is or -1 */
}
ParseData;

MessageWindow msgwindow;

enum
{
        MSG_COL_LINE = 0,
        MSG_COL_DOC_ID,
        MSG_COL_COLOR,
        MSG_COL_STRING,
        MSG_COL_COUNT
};

enum
{
        COMPILER_COL_COLOR = 0,
        COMPILER_COL_STRING,
        COMPILER_COL_COUNT
};


static GdkColor color_error = {0, 0xFFFF, 0, 0};
static GdkColor color_context = {0, 0x7FFF, 0, 0};
static GdkColor color_message = {0, 0, 0, 0xD000};


static void prepare_msg_tree_view(void);
static void prepare_status_tree_view(void);
static void prepare_compiler_tree_view(void);
static GtkWidget *create_message_popup_menu(gint type);
static gboolean on_msgwin_button_press_event(GtkWidget *widget, GdkEventButton *event,
                                                                                                                                                        gpointer user_data);
static void on_scribble_populate(GtkTextView *textview, GtkMenu *arg1, gpointer user_data);


void msgwin_show_hide_tabs(void)
{
        ui_widget_show_hide(gtk_widget_get_parent(msgwindow.tree_status), interface_prefs.msgwin_status_visible);
        ui_widget_show_hide(gtk_widget_get_parent(msgwindow.tree_compiler), interface_prefs.msgwin_compiler_visible);
        ui_widget_show_hide(gtk_widget_get_parent(msgwindow.tree_msg), interface_prefs.msgwin_messages_visible);
        ui_widget_show_hide(gtk_widget_get_parent(msgwindow.scribble), interface_prefs.msgwin_scribble_visible);
}


/** Sets the Messages path for opening any parsed filenames without absolute path
 * from message lines.
 * @param messages_dir The directory. **/
GEANY_API_SYMBOL
void msgwin_set_messages_dir(const gchar *messages_dir)
{
        g_free(msgwindow.messages_dir);
        msgwindow.messages_dir = g_strdup(messages_dir);
}


void load_color(const gchar *color_name, GdkColor *color)
{
#if GTK_CHECK_VERSION(3, 0, 0)
        GdkRGBA rgba_color;
        GtkWidgetPath *path = gtk_widget_path_new();
        GtkStyleContext *ctx = gtk_style_context_new();

        gtk_widget_path_append_type(path, GTK_TYPE_WINDOW);
        gtk_widget_path_iter_set_name(path, -1, color_name);
        gtk_style_context_set_screen(ctx, gdk_screen_get_default());
        gtk_style_context_set_path(ctx, path);
        gtk_style_context_get_color(ctx, gtk_style_context_get_state(ctx), &rgba_color);

        color->red   = 0xffff * rgba_color.red;
        color->green = 0xffff * rgba_color.green;
        color->blue  = 0xffff * rgba_color.blue;

        gtk_widget_path_unref(path);
        g_object_unref(ctx);
#else
        gchar *path = g_strconcat("*.", color_name, NULL);

        GtkSettings *settings = gtk_settings_get_default();
        GtkStyle *style = gtk_rc_get_style_by_paths(settings, path, NULL, GTK_TYPE_WIDGET);
        *color = style->fg[GTK_STATE_NORMAL];

        g_free(path);
#endif
}


void msgwin_init(void)
{
        msgwindow.notebook = ui_lookup_widget(main_widgets.window, "notebook_info");
        msgwindow.tree_status = ui_lookup_widget(main_widgets.window, "treeview3");
        msgwindow.tree_msg = ui_lookup_widget(main_widgets.window, "treeview4");
        msgwindow.tree_compiler = ui_lookup_widget(main_widgets.window, "treeview5");
        msgwindow.scribble = ui_lookup_widget(main_widgets.window, "textview_scribble");
        msgwindow.messages_dir = NULL;

        prepare_status_tree_view();
        prepare_msg_tree_view();
        prepare_compiler_tree_view();
        msgwindow.popup_status_menu = create_message_popup_menu(MSG_STATUS);
        msgwindow.popup_msg_menu = create_message_popup_menu(MSG_MESSAGE);
        msgwindow.popup_compiler_menu = create_message_popup_menu(MSG_COMPILER);

        ui_widget_modify_font_from_string(msgwindow.scribble, interface_prefs.msgwin_font);
        g_signal_connect(msgwindow.scribble, "populate-popup", G_CALLBACK(on_scribble_populate), NULL);

        load_color("geany-compiler-error", &color_error);
        load_color("geany-compiler-context", &color_context);
        load_color("geany-compiler-message", &color_message);
}


void msgwin_finalize(void)
{
        g_free(msgwindow.messages_dir);
}


static gboolean on_msgwin_key_press_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
        gboolean enter_or_return = ui_is_keyval_enter_or_return(event->keyval);

        if (enter_or_return || event->keyval == GDK_space)
        {
                switch (GPOINTER_TO_INT(data))
                {
                        case MSG_COMPILER:
                        {       /* key press in the compiler treeview */
                                msgwin_goto_compiler_file_line(enter_or_return);
                                break;
                        }
                        case MSG_MESSAGE:
                        {       /* key press in the message treeview (results of 'Find usage') */
                                msgwin_goto_messages_file_line(enter_or_return);
                                break;
                        }
                }
        }
        return FALSE;
}


/* does some preparing things to the status message list widget */
static void prepare_status_tree_view(void)
{
        GtkCellRenderer *renderer;
        GtkTreeViewColumn *column;

        msgwindow.store_status = gtk_list_store_new(1, G_TYPE_STRING);
        gtk_tree_view_set_model(GTK_TREE_VIEW(msgwindow.tree_status), GTK_TREE_MODEL(msgwindow.store_status));
        g_object_unref(msgwindow.store_status);

        renderer = gtk_cell_renderer_text_new();
        column = gtk_tree_view_column_new_with_attributes(_("Status messages"), renderer, "text", 0, NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(msgwindow.tree_status), column);

        gtk_tree_view_set_enable_search(GTK_TREE_VIEW(msgwindow.tree_status), FALSE);

        ui_widget_modify_font_from_string(msgwindow.tree_status, interface_prefs.msgwin_font);

        g_signal_connect(msgwindow.tree_status, "button-press-event",
                                G_CALLBACK(on_msgwin_button_press_event), GINT_TO_POINTER(MSG_STATUS));
}


/* does some preparing things to the message list widget
 * (currently used for showing results of 'Find usage') */
static void prepare_msg_tree_view(void)
{
        GtkCellRenderer *renderer;
        GtkTreeViewColumn *column;
        GtkTreeSelection *selection;

        /* line, doc id, fg, str */
        msgwindow.store_msg = gtk_list_store_new(MSG_COL_COUNT, G_TYPE_INT, G_TYPE_UINT,
                GDK_TYPE_COLOR, G_TYPE_STRING);
        gtk_tree_view_set_model(GTK_TREE_VIEW(msgwindow.tree_msg), GTK_TREE_MODEL(msgwindow.store_msg));
        g_object_unref(msgwindow.store_msg);

        renderer = gtk_cell_renderer_text_new();
        column = gtk_tree_view_column_new_with_attributes(NULL, renderer,
                "foreground-gdk", MSG_COL_COLOR, "text", MSG_COL_STRING, NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(msgwindow.tree_msg), column);

        gtk_tree_view_set_enable_search(GTK_TREE_VIEW(msgwindow.tree_msg), FALSE);

        ui_widget_modify_font_from_string(msgwindow.tree_msg, interface_prefs.msgwin_font);

        /* use button-release-event so the selection has changed
         * (connect_after button-press-event doesn't work) */
        g_signal_connect(msgwindow.tree_msg, "button-release-event",
                                        G_CALLBACK(on_msgwin_button_press_event), GINT_TO_POINTER(MSG_MESSAGE));
        /* for double-clicking only, after the first release */
        g_signal_connect(msgwindow.tree_msg, "button-press-event",
                                        G_CALLBACK(on_msgwin_button_press_event), GINT_TO_POINTER(MSG_MESSAGE));
        g_signal_connect(msgwindow.tree_msg, "key-press-event",
                G_CALLBACK(on_msgwin_key_press_event), GINT_TO_POINTER(MSG_MESSAGE));

        /* selection handling */
        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(msgwindow.tree_msg));
        gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);
        /*g_signal_connect(selection, "changed",G_CALLBACK(on_msg_tree_selection_changed), NULL);*/
}


/* does some preparing things to the compiler list widget */
static void prepare_compiler_tree_view(void)
{
        GtkCellRenderer *renderer;
        GtkTreeViewColumn *column;
        GtkTreeSelection *selection;

        msgwindow.store_compiler = gtk_list_store_new(COMPILER_COL_COUNT, GDK_TYPE_COLOR, G_TYPE_STRING);
        gtk_tree_view_set_model(GTK_TREE_VIEW(msgwindow.tree_compiler), GTK_TREE_MODEL(msgwindow.store_compiler));
        g_object_unref(msgwindow.store_compiler);

        renderer = gtk_cell_renderer_text_new();
        column = gtk_tree_view_column_new_with_attributes(NULL, renderer,
                "foreground-gdk", COMPILER_COL_COLOR, "text", COMPILER_COL_STRING, NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(msgwindow.tree_compiler), column);

        gtk_tree_view_set_enable_search(GTK_TREE_VIEW(msgwindow.tree_compiler), FALSE);

        ui_widget_modify_font_from_string(msgwindow.tree_compiler, interface_prefs.msgwin_font);

        /* use button-release-event so the selection has changed
         * (connect_after button-press-event doesn't work) */
        g_signal_connect(msgwindow.tree_compiler, "button-release-event",
                                        G_CALLBACK(on_msgwin_button_press_event), GINT_TO_POINTER(MSG_COMPILER));
        /* for double-clicking only, after the first release */
        g_signal_connect(msgwindow.tree_compiler, "button-press-event",
                                        G_CALLBACK(on_msgwin_button_press_event), GINT_TO_POINTER(MSG_COMPILER));
        g_signal_connect(msgwindow.tree_compiler, "key-press-event",
                G_CALLBACK(on_msgwin_key_press_event), GINT_TO_POINTER(MSG_COMPILER));

        /* selection handling */
        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(msgwindow.tree_compiler));
        gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);
        /*g_signal_connect(selection, "changed", G_CALLBACK(on_msg_tree_selection_changed), NULL);*/
}

static const GdkColor *get_color(gint msg_color)
{
        switch (msg_color)
        {
                case COLOR_RED: return &color_error;
                case COLOR_DARK_RED: return &color_context;
                case COLOR_BLUE: return &color_message;
                default: return NULL;
        }
}


/**
 *  Adds a new message in the compiler tab treeview in the messages window.
 *
 *  @param msg_color A color to be used for the text. It must be an element of #MsgColors.
 *  @param format @c printf()-style format string.
 *  @param ... Arguments for the @c format string.
 **/
GEANY_API_SYMBOL
void msgwin_compiler_add(gint msg_color, const gchar *format, ...)
{
        gchar *string;
        va_list args;

        va_start(args, format);
        string = g_strdup_vprintf(format, args);
        va_end(args);
        msgwin_compiler_add_string(msg_color, string);
        g_free(string);
}


void msgwin_compiler_add_string(gint msg_color, const gchar *msg)
{
        GtkTreeIter iter;
        const GdkColor *color = get_color(msg_color);
        gchar *utf8_msg;

        if (! g_utf8_validate(msg, -1, NULL))
                utf8_msg = utils_get_utf8_from_locale(msg);
        else
                utf8_msg = (gchar *) msg;

        gtk_list_store_append(msgwindow.store_compiler, &iter);
        gtk_list_store_set(msgwindow.store_compiler, &iter,
                COMPILER_COL_COLOR, color, COMPILER_COL_STRING, utf8_msg, -1);

        if (ui_prefs.msgwindow_visible && interface_prefs.compiler_tab_autoscroll)
        {
                GtkTreePath *path = gtk_tree_model_get_path(
                        gtk_tree_view_get_model(GTK_TREE_VIEW(msgwindow.tree_compiler)), &iter);

                gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(msgwindow.tree_compiler), path, NULL, TRUE, 0.5, 0.5);
                gtk_tree_path_free(path);
        }

        /* calling build_menu_update for every build message would be overkill, TODO really should call it once when all done */
        gtk_widget_set_sensitive(build_get_menu_items(-1)->menu_item[GBG_FIXED][GBF_NEXT_ERROR], TRUE);
        gtk_widget_set_sensitive(build_get_menu_items(-1)->menu_item[GBG_FIXED][GBF_PREV_ERROR], TRUE);

        if (utf8_msg != msg)
                g_free(utf8_msg);
}


void msgwin_show_hide(gboolean show)
{
        ui_prefs.msgwindow_visible = show;
        ignore_callback = TRUE;
        gtk_check_menu_item_set_active(
                GTK_CHECK_MENU_ITEM(ui_lookup_widget(main_widgets.window, "menu_show_messages_window1")),
                show);
        ignore_callback = FALSE;
        ui_widget_show_hide(main_widgets.message_window_notebook, show);
        /* set the input focus back to the editor */
        keybindings_send_command(GEANY_KEY_GROUP_FOCUS, GEANY_KEYS_FOCUS_EDITOR);
}


/**
 *  Adds a new message in the messages tab treeview in the messages window.
 *  If @a line and @a doc are set, clicking on this line jumps into the file which is specified
 *  by @a doc into the line specified with @a line.
 *
 *  @param msg_color A color to be used for the text. It must be an element of #MsgColors.
 *  @param line The document's line where the message belongs to. Set to @c -1 to ignore.
 *  @param doc The document. Set to @c NULL to ignore.
 *  @param format @c printf()-style format string.
 *  @param ... Arguments for the @c format string.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
void msgwin_msg_add(gint msg_color, gint line, GeanyDocument *doc, const gchar *format, ...)
{
        gchar *string;
        va_list args;

        va_start(args, format);
        string = g_strdup_vprintf(format, args);
        va_end(args);

        msgwin_msg_add_string(msg_color, line, doc, string);
        g_free(string);
}


/* adds string to the msg treeview */
void msgwin_msg_add_string(gint msg_color, gint line, GeanyDocument *doc, const gchar *string)
{
        GtkTreeIter iter;
        const GdkColor *color = get_color(msg_color);
        gchar *tmp;
        gsize len;
        gchar *utf8_msg;

        if (! ui_prefs.msgwindow_visible)
                msgwin_show_hide(TRUE);

        /* work around a strange problem when adding very long lines(greater than 4000 bytes)
         * cut the string to a maximum of 1024 bytes and discard the rest */
        /* TODO: find the real cause for the display problem / if it is GtkTreeView file a bug report */
        len = strlen(string);
        if (len > 1024)
                tmp = g_strndup(string, 1024);
        else
                tmp = g_strdup(string);

        if (! g_utf8_validate(tmp, -1, NULL))
                utf8_msg = utils_get_utf8_from_locale(tmp);
        else
                utf8_msg = tmp;

        gtk_list_store_append(msgwindow.store_msg, &iter);
        gtk_list_store_set(msgwindow.store_msg, &iter,
                MSG_COL_LINE, line, MSG_COL_DOC_ID, doc ? doc->id : 0, MSG_COL_COLOR,
                color, MSG_COL_STRING, utf8_msg, -1);

        g_free(tmp);
        if (utf8_msg != tmp)
                g_free(utf8_msg);
}


/**
 *  Logs a status message *without* setting the status bar.
 *  (Use ui_set_statusbar() to display text on the statusbar)
 *
 *  @param format @c printf()-style format string.
 *  @param ... Arguments for the @c format string.
 **/
GEANY_API_SYMBOL
void msgwin_status_add(const gchar *format, ...)
{
        GtkTreeIter iter;
        gchar *string;
        gchar *statusmsg, *time_str;
        va_list args;

        va_start(args, format);
        string = g_strdup_vprintf(format, args);
        va_end(args);

        /* add a timestamp to status messages */
        time_str = utils_get_current_time_string();
        statusmsg = g_strconcat(time_str, ": ", string, NULL);
        g_free(time_str);
        g_free(string);

        /* add message to Status window */
        gtk_list_store_append(msgwindow.store_status, &iter);
        gtk_list_store_set(msgwindow.store_status, &iter, 0, statusmsg, -1);
        g_free(statusmsg);

        if (G_LIKELY(main_status.main_window_realized))
        {
                GtkTreePath *path = gtk_tree_model_get_path(gtk_tree_view_get_model(GTK_TREE_VIEW(msgwindow.tree_status)), &iter);

                gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(msgwindow.tree_status), path, NULL, FALSE, 0.0, 0.0);
                if (prefs.switch_to_status)
                        gtk_notebook_set_current_page(GTK_NOTEBOOK(msgwindow.notebook), MSG_STATUS);
                gtk_tree_path_free(path);
        }
}


static void
on_message_treeview_clear_activate(GtkMenuItem *menuitem, gpointer user_data)
{
        gint tabnum = GPOINTER_TO_INT(user_data);

        msgwin_clear_tab(tabnum);
}


static void
on_compiler_treeview_copy_activate(GtkMenuItem *menuitem, gpointer user_data)
{
        GtkWidget *tv = NULL;
        GtkTreeSelection *selection;
        GtkTreeModel *model;
        GtkTreeIter iter;
        gint str_idx = COMPILER_COL_STRING;

        switch (GPOINTER_TO_INT(user_data))
        {
                case MSG_STATUS:
                tv = msgwindow.tree_status;
                str_idx = 0;
                break;

                case MSG_COMPILER:
                tv = msgwindow.tree_compiler;
                break;

                case MSG_MESSAGE:
                tv = msgwindow.tree_msg;
                str_idx = MSG_COL_STRING;
                break;
        }
        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tv));

        if (gtk_tree_selection_get_selected(selection, &model, &iter))
        {
                gchar *string;

                gtk_tree_model_get(model, &iter, str_idx, &string, -1);
                if (!EMPTY(string))
                {
                        gtk_clipboard_set_text(gtk_clipboard_get(gdk_atom_intern("CLIPBOARD", FALSE)),
                                string, -1);
                }
                g_free(string);
        }
}


static void on_compiler_treeview_copy_all_activate(GtkMenuItem *menuitem, gpointer user_data)
{
        GtkListStore *store = msgwindow.store_compiler;
        GtkTreeIter iter;
        GString *str = g_string_new("");
        gint str_idx = COMPILER_COL_STRING;
        gboolean valid;

        switch (GPOINTER_TO_INT(user_data))
        {
                case MSG_STATUS:
                store = msgwindow.store_status;
                str_idx = 0;
                break;

                case MSG_COMPILER:
                /* default values */
                break;

                case MSG_MESSAGE:
                store = msgwindow.store_msg;
                str_idx = MSG_COL_STRING;
                break;
        }

        /* walk through the list and copy every line into a string */
        valid = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter);
        while (valid)
        {
                gchar *line;

                gtk_tree_model_get(GTK_TREE_MODEL(store), &iter, str_idx, &line, -1);
                if (!EMPTY(line))
                {
                        g_string_append(str, line);
                        g_string_append_c(str, '\n');
                }
                g_free(line);

                valid = gtk_tree_model_iter_next(GTK_TREE_MODEL(store), &iter);
        }

        /* copy the string into the clipboard */
        if (str->len > 0)
        {
                gtk_clipboard_set_text(
                        gtk_clipboard_get(gdk_atom_intern("CLIPBOARD", FALSE)),
                        str->str,
                        str->len);
        }
        g_string_free(str, TRUE);
}


static void
on_hide_message_window(GtkMenuItem *menuitem, gpointer user_data)
{
        msgwin_show_hide(FALSE);
}


static GtkWidget *create_message_popup_menu(gint type)
{
        GtkWidget *message_popup_menu, *clear, *copy, *copy_all, *image;

        message_popup_menu = gtk_menu_new();

        clear = gtk_image_menu_item_new_from_stock(GTK_STOCK_CLEAR, NULL);
        gtk_widget_show(clear);
        gtk_container_add(GTK_CONTAINER(message_popup_menu), clear);
        g_signal_connect(clear, "activate",
                G_CALLBACK(on_message_treeview_clear_activate), GINT_TO_POINTER(type));

        copy = gtk_image_menu_item_new_with_mnemonic(_("C_opy"));
        gtk_widget_show(copy);
        gtk_container_add(GTK_CONTAINER(message_popup_menu), copy);
        image = gtk_image_new_from_stock(GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
        gtk_widget_show(image);
        gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(copy), image);
        g_signal_connect(copy, "activate",
                G_CALLBACK(on_compiler_treeview_copy_activate), GINT_TO_POINTER(type));

        copy_all = gtk_image_menu_item_new_with_mnemonic(_("Copy _All"));
        gtk_widget_show(copy_all);
        gtk_container_add(GTK_CONTAINER(message_popup_menu), copy_all);
        image = gtk_image_new_from_stock(GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
        gtk_widget_show(image);
        gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(copy_all), image);
        g_signal_connect(copy_all, "activate",
                G_CALLBACK(on_compiler_treeview_copy_all_activate), GINT_TO_POINTER(type));

        msgwin_menu_add_common_items(GTK_MENU(message_popup_menu));

        return message_popup_menu;
}


static void on_scribble_populate(GtkTextView *textview, GtkMenu *arg1, gpointer user_data)
{
        msgwin_menu_add_common_items(arg1);
}


/* Menu items that should be on all message window popup menus */
void msgwin_menu_add_common_items(GtkMenu *menu)
{
        GtkWidget *item;

        item = gtk_separator_menu_item_new();
        gtk_widget_show(item);
        gtk_container_add(GTK_CONTAINER(menu), item);

        item = gtk_menu_item_new_with_mnemonic(_("_Hide Message Window"));
        gtk_widget_show(item);
        gtk_container_add(GTK_CONTAINER(menu), item);
        g_signal_connect(item, "activate", G_CALLBACK(on_hide_message_window), NULL);
}


/* look back up from the current path and find the directory we came from */
static gboolean
find_prev_build_dir(GtkTreePath *cur, GtkTreeModel *model, gchar **prefix)
{
        GtkTreeIter iter;
        *prefix = NULL;

        while (gtk_tree_path_prev(cur))
        {
                if (gtk_tree_model_get_iter(model, &iter, cur))
                {
                        gchar *string;
                        gtk_tree_model_get(model, &iter, COMPILER_COL_STRING, &string, -1);
                        if (string != NULL && build_parse_make_dir(string, prefix))
                        {
                                g_free(string);
                                return TRUE;
                        }
                        g_free(string);
                }
        }

        return FALSE;
}


static gboolean goto_compiler_file_line(const gchar *fname, gint line, gboolean focus_editor)
{
        gboolean ret = FALSE;
        gchar *filename;

        if (!fname || line <= -1)
                return FALSE;

        filename = utils_get_locale_from_utf8(fname);

        /* If the path doesn't exist, try the current document.
         * This happens when we receive build messages in the wrong order - after the
         * 'Leaving directory' messages */
        if (!g_file_test(filename, G_FILE_TEST_EXISTS))
        {
                gchar *cur_dir = utils_get_current_file_dir_utf8();
                gchar *name;

                if (cur_dir)
                {
                        /* we let the user know we couldn't find the parsed filename from the message window */
                        SETPTR(cur_dir, utils_get_locale_from_utf8(cur_dir));
                        name = g_path_get_basename(filename);
                        SETPTR(name, g_build_path(G_DIR_SEPARATOR_S, cur_dir, name, NULL));
                        g_free(cur_dir);

                        if (g_file_test(name, G_FILE_TEST_EXISTS))
                        {
                                ui_set_statusbar(FALSE, _("Could not find file '%s' - trying the current document path."),
                                        fname);
                                SETPTR(filename, name);
                        }
                        else
                                g_free(name);
                }
        }

        {
                gchar *utf8_filename = utils_get_utf8_from_locale(filename);
                GeanyDocument *doc = document_find_by_filename(utf8_filename);
                GeanyDocument *old_doc = document_get_current();

                g_free(utf8_filename);

                if (doc == NULL)        /* file not already open */
                        doc = document_open_file(filename, FALSE, NULL, NULL);

                if (doc != NULL)
                {
                        if (! doc->changed && editor_prefs.use_indicators)      /* if modified, line may be wrong */
                                editor_indicator_set_on_line(doc->editor, GEANY_INDICATOR_ERROR, line - 1);

                        ret = navqueue_goto_line(old_doc, doc, line);
                        if (ret && focus_editor)
                                gtk_widget_grab_focus(GTK_WIDGET(doc->editor->sci));

                        ret = TRUE;
                }
        }

        g_free(filename);

        return ret;
}


gboolean msgwin_goto_compiler_file_line(gboolean focus_editor)
{
        GtkTreeIter iter;
        GtkTreeModel *model;
        GtkTreeSelection *selection;
        gchar *string;
        GdkColor *color;

        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(msgwindow.tree_compiler));
        if (gtk_tree_selection_get_selected(selection, &model, &iter))
        {
                /* if the item is not coloured red, it's not an error line */
                gtk_tree_model_get(model, &iter, COMPILER_COL_COLOR, &color, -1);
                if (color == NULL || ! gdk_color_equal(color, &color_error))
                {
                        if (color != NULL)
                                gdk_color_free(color);
                        return FALSE;
                }
                gdk_color_free(color);

                gtk_tree_model_get(model, &iter, COMPILER_COL_STRING, &string, -1);
                if (string != NULL)
                {
                        gint line;
                        gchar *filename, *dir;
                        GtkTreePath *path;
                        gboolean ret;

                        path = gtk_tree_model_get_path(model, &iter);
                        find_prev_build_dir(path, model, &dir);
                        gtk_tree_path_free(path);
                        msgwin_parse_compiler_error_line(string, dir, &filename, &line);
                        g_free(string);
                        g_free(dir);

                        ret = goto_compiler_file_line(filename, line, focus_editor);
                        g_free(filename);
                        return ret;
                }
        }
        return FALSE;
}


static void make_absolute(gchar **filename, const gchar *dir)
{
        guint skip_dot_slash = 0;       /* number of characters to skip at the beginning of the filename */

        if (*filename == NULL)
                return;

        /* skip some characters at the beginning of the filename, at the moment only "./"
         * can be extended if other "trash" is known */
        if (strncmp(*filename, "./", 2) == 0)
                skip_dot_slash = 2;

        /* add directory */
        if (! utils_is_absolute_path(*filename))
                SETPTR(*filename, g_build_filename(dir, *filename + skip_dot_slash, NULL));
}


/* try to parse the file and line number where the error occurred described in line
 * and when something useful is found, it stores the line number in *line and the
 * relevant file with the error in *filename.
 * *line will be -1 if no error was found in string.
 * *filename must be freed unless it is NULL. */
static void parse_file_line(ParseData *data, gchar **filename, gint *line)
{
        gchar *end = NULL;
        gchar **fields;

        *filename = NULL;
        *line = -1;

        g_return_if_fail(data->string != NULL);

        fields = g_strsplit_set(data->string, data->pattern, data->min_fields);

        /* parse the line */
        if (g_strv_length(fields) < data->min_fields)
        {
                g_strfreev(fields);
                return;
        }

        *line = strtol(fields[data->line_idx], &end, 10);

        /* if the line could not be read, line is 0 and an error occurred, so we leave */
        if (fields[data->line_idx] == end)
        {
                g_strfreev(fields);
                return;
        }

        /* let's stop here if there is no filename in the error message */
        if (data->file_idx == -1)
        {
                /* we have no filename in the error message, so take the current one and hope it's correct */
                GeanyDocument *doc = document_get_current();
                if (doc != NULL)
                        *filename = g_strdup(doc->file_name);
                g_strfreev(fields);
                return;
        }

        *filename = g_strdup(fields[data->file_idx]);
        g_strfreev(fields);
}


static void parse_compiler_error_line(const gchar *string,
                gchar **filename, gint *line)
{
        ParseData data = {NULL, NULL, 0, 0, 0};

        data.string = string;

        switch (build_info.file_type_id)
        {
                case GEANY_FILETYPES_PHP:
                {
                        /* Parse error: parse error, unexpected T_CASE in brace_bug.php on line 3
                         * Parse error: syntax error, unexpected T_LNUMBER, expecting T_FUNCTION in bob.php on line 16 */
                        gchar *tmp = strstr(string, " in ");

                        if (tmp != NULL)
                        {
                                data.string = tmp;
                                data.pattern = " ";
                                data.min_fields = 6;
                                data.line_idx = 5;
                                data.file_idx = 2;
                        }
                        else
                        {
                                data.pattern = " ";
                                data.min_fields = 11;
                                data.line_idx = 10;
                                data.file_idx = 7;
                        }
                        break;
                }
                case GEANY_FILETYPES_PERL:
                {
                        /* syntax error at test.pl line 7, near "{ */
                        data.pattern = " ";
                        data.min_fields = 6;
                        data.line_idx = 5;
                        data.file_idx = 3;
                        break;
                }
                /* the error output of python and tcl equals */
                case GEANY_FILETYPES_TCL:
                case GEANY_FILETYPES_PYTHON:
                {
                        /* File "HyperArch.py", line 37, in ?
                         * (file "clrdial.tcl" line 12)
                         * */
                        if (strstr(string, " line ") != NULL)
                        {
                                /* Tcl and old Python format (<= Python 2.5) */
                                data.pattern = " \"";
                                data.min_fields = 6;
                                data.line_idx = 5;
                                data.file_idx = 2;
                        }
                        else
                        {
                                /* SyntaxError: ('invalid syntax', ('sender.py', 149, 20, ' ...'))
                                 * (used since Python 2.6) */
                                data.pattern = ",'";
                                data.min_fields = 8;
                                data.line_idx = 6;
                                data.file_idx = 4;
                        }
                        break;
                }
                case GEANY_FILETYPES_BASIC:
                case GEANY_FILETYPES_PASCAL:
                case GEANY_FILETYPES_CS:
                {
                        /* getdrive.bas(52) error 18: Syntax error in '? GetAllDrives'
                         * bandit.pas(149,3) Fatal: Syntax error, ";" expected but "ELSE" found */
                        data.pattern = "(";
                        data.min_fields = 2;
                        data.line_idx = 1;
                        data.file_idx = 0;
                        break;
                }
                case GEANY_FILETYPES_D:
                {
                        /* GNU D compiler front-end, gdc
                         * gantry.d:18: variable gantry.main.c reference to auto class must be auto
                         * warning - gantry.d:20: statement is not reachable
                         * Digital Mars dmd compiler
                         * warning - pi.d(118): implicit conversion of expression (digit) of type int ...
                         * gantry.d(18): variable gantry.main.c reference to auto class must be auto */
                        if (strncmp(string, "warning - ", 10) == 0)
                        {
                                data.pattern = " (:";
                                data.min_fields = 4;
                                data.line_idx = 3;
                                data.file_idx = 2;
                        }
                        else
                        {
                                data.pattern = "(:";
                                data.min_fields = 2;
                                data.line_idx = 1;
                                data.file_idx = 0;
                        }
                        break;
                }
                case GEANY_FILETYPES_FERITE:
                {
                        /* Error: Parse Error: on line 5 in "/tmp/hello.fe"
                         * Error: Compile Error: on line 24, in /test/class.fe */
                        if (strncmp(string, "Error: Compile Error", 20) == 0)
                        {
                                data.pattern = " ";
                                data.min_fields = 8;
                                data.line_idx = 5;
                                data.file_idx = 7;
                        }
                        else
                        {
                                data.pattern = " \"";
                                data.min_fields = 10;
                                data.line_idx = 5;
                                data.file_idx = 8;
                        }
                        break;
                }
                case GEANY_FILETYPES_HTML:
                {
                        /* line 78 column 7 - Warning: <table> missing '>' for end of tag */
                        data.pattern = " ";
                        data.min_fields = 4;
                        data.line_idx = 1;
                        data.file_idx = -1;
                        break;
                }
                /* All GNU gcc-like error messages */
                case GEANY_FILETYPES_C:
                case GEANY_FILETYPES_CPP:
                case GEANY_FILETYPES_RUBY:
                case GEANY_FILETYPES_JAVA:
                        /* only gcc is supported, I don't know any other C(++) compilers and their error messages
                         * empty.h:4: Warnung: type defaults to `int' in declaration of `foo'
                         * empty.c:21: error: conflicting types for `foo'
                         * Only parse file and line, so that linker errors will also work (with -g) */
                case GEANY_FILETYPES_F77:
                case GEANY_FILETYPES_FORTRAN:
                case GEANY_FILETYPES_LATEX:
                        /* ./kommtechnik_2b.tex:18: Emergency stop. */
                case GEANY_FILETYPES_MAKE:      /* Assume makefile is building with gcc */
                case GEANY_FILETYPES_NONE:
                default:        /* The default is a GNU gcc type error */
                {
                        if (build_info.file_type_id == GEANY_FILETYPES_JAVA &&
                                strncmp(string, "[javac]", 7) == 0)
                        {
                                /* Java Apache Ant.
                                 * [javac] <Full Path to File + extension>:<line n°>: <error> */
                                data.pattern = " :";
                                data.min_fields = 4;
                                data.line_idx = 2;
                                data.file_idx = 1;
                                break;
                        }
                        /* don't accidentally find libtool versions x:y:x and think it is a file name */
                        if (strstr(string, "libtool --mode=link") == NULL)
                        {
                                data.pattern = ":";
                                data.min_fields = 3;
                                data.line_idx = 1;
                                data.file_idx = 0;
                                break;
                        }
                }
        }

        if (data.pattern != NULL)
                parse_file_line(&data, filename, line);
}


/* try to parse the file and line number where the error occurred described in string
 * and when something useful is found, it stores the line number in *line and the
 * relevant file with the error in *filename.
 * *line will be -1 if no error was found in string.
 * *filename must be freed unless it is NULL. */
void msgwin_parse_compiler_error_line(const gchar *string, const gchar *dir,
                gchar **filename, gint *line)
{
        GeanyFiletype *ft;
        gchar *trimmed_string, *utf8_dir;

        *filename = NULL;
        *line = -1;

        if (G_UNLIKELY(string == NULL))
                return;

        if (dir == NULL)
                utf8_dir = utils_get_utf8_from_locale(build_info.dir);
        else
                utf8_dir = g_strdup(dir);
        g_return_if_fail(utf8_dir != NULL);

        trimmed_string = g_strdup(string);
        g_strchug(trimmed_string); /* remove possible leading whitespace */

        ft = filetypes[build_info.file_type_id];

        /* try parsing with a custom regex */
        if (!filetypes_parse_error_message(ft, trimmed_string, filename, line))
        {
                /* fallback to default old-style parsing */
                parse_compiler_error_line(trimmed_string, filename, line);
        }
        make_absolute(filename, utf8_dir);
        g_free(trimmed_string);
        g_free(utf8_dir);
}


/* Tries to parse strings of the file:line style, allowing line field to be missing
 * * filename is filled with the filename, should be freed
 * * line is filled with the line number or -1 */
static void msgwin_parse_generic_line(const gchar *string, gchar **filename, gint *line)
{
        gchar **fields;
        gboolean incertain = TRUE; /* whether we're reasonably certain of the result */

        *filename = NULL;
        *line = -1;

        fields = g_strsplit(string, ":", 2);
        /* extract the filename */
        if (fields[0] != NULL)
        {
                *filename = utils_get_locale_from_utf8(fields[0]);
                if (msgwindow.messages_dir != NULL)
                        make_absolute(filename, msgwindow.messages_dir);

                /* now the line */
                if (fields[1] != NULL)
                {
                        gchar *end;

                        *line = strtol(fields[1], &end, 10);
                        if (end == fields[1])
                                *line = -1;
                        else if (*end == ':' || g_ascii_isspace(*end))
                        {       /* if we have a blank or a separator right after the number, assume we really got a
                                 * filename (it's a grep-like syntax) */
                                incertain = FALSE;
                        }
                }

                /* if we aren't sure we got a supposedly correct filename, check it */
                if (incertain && ! g_file_test(*filename, G_FILE_TEST_EXISTS))
                {
                        SETPTR(*filename, NULL);
                        *line = -1;
                }
        }
        g_strfreev(fields);
}


gboolean msgwin_goto_messages_file_line(gboolean focus_editor)
{
        GtkTreeIter iter;
        GtkTreeModel *model;
        GtkTreeSelection *selection;
        gboolean ret = FALSE;

        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(msgwindow.tree_msg));
        if (gtk_tree_selection_get_selected(selection, &model, &iter))
        {
                gint line;
                guint id;
                gchar *string;
                GeanyDocument *doc;
                GeanyDocument *old_doc = document_get_current();

                gtk_tree_model_get(model, &iter,
                        MSG_COL_LINE, &line, MSG_COL_DOC_ID, &id, MSG_COL_STRING, &string, -1);
                if (line >= 0 && id > 0)
                {
                        /* check doc is still open */
                        doc = document_find_by_id(id);
                        if (!doc)
                        {
                                ui_set_statusbar(FALSE, _("The document has been closed."));
                                utils_beep();
                        }
                        else
                        {
                                ret = navqueue_goto_line(old_doc, doc, line);
                                if (ret && focus_editor)
                                        gtk_widget_grab_focus(GTK_WIDGET(doc->editor->sci));
                        }
                }
                else if (line < 0 && string != NULL)
                {
                        gchar *filename;

                        /* try with a file:line parsing */
                        msgwin_parse_generic_line(string, &filename, &line);
                        if (filename != NULL)
                        {
                                /* use document_open_file to find an already open file, or open it in place */
                                doc = document_open_file(filename, FALSE, NULL, NULL);
                                if (doc != NULL)
                                {
                                        ret = (line < 0) ? TRUE : navqueue_goto_line(old_doc, doc, line);
                                        if (ret && focus_editor)
                                                gtk_widget_grab_focus(GTK_WIDGET(doc->editor->sci));
                                }
                        }
                        g_free(filename);
                }
                g_free(string);
        }
        return ret;
}


static gboolean on_msgwin_button_press_event(GtkWidget *widget, GdkEventButton *event,
                                                                                         gpointer user_data)
{
        /* user_data might be NULL, GPOINTER_TO_INT returns 0 if called with NULL */
        gboolean double_click = event->type == GDK_2BUTTON_PRESS;

        if (event->button == 1 && (event->type == GDK_BUTTON_RELEASE || double_click))
        {
                switch (GPOINTER_TO_INT(user_data))
                {
                        case MSG_COMPILER:
                        {       /* mouse click in the compiler treeview */
                                msgwin_goto_compiler_file_line(double_click);
                                break;
                        }
                        case MSG_MESSAGE:
                        {       /* mouse click in the message treeview (results of 'Find usage') */
                                msgwin_goto_messages_file_line(double_click);
                                break;
                        }
                }
                return double_click;    /* TRUE prevents message window re-focusing */
        }

        if (event->button == 3)
        {       /* popupmenu to hide or clear the active treeview */
                switch (GPOINTER_TO_INT(user_data))
                {
                        case MSG_STATUS:
                        {
                                gtk_menu_popup(GTK_MENU(msgwindow.popup_status_menu), NULL, NULL, NULL, NULL,
                                                                                                                                        event->button, event->time);
                                break;
                        }
                        case MSG_MESSAGE:
                        {
                                gtk_menu_popup(GTK_MENU(msgwindow.popup_msg_menu), NULL, NULL, NULL, NULL,
                                                                                                                                        event->button, event->time);
                                break;
                        }
                        case MSG_COMPILER:
                        {
                                gtk_menu_popup(GTK_MENU(msgwindow.popup_compiler_menu), NULL, NULL, NULL, NULL,
                                                                                                                                        event->button, event->time);
                                break;
                        }
                }
        }
        return FALSE;
}


/**
 *  Switches to the given notebook tab of the messages window and shows the messages window
 *  if it was previously hidden and @a show is set to @c TRUE.
 *
 *  @param tabnum An index of a tab in the messages window. Valid values are all elements of
 *                #MessageWindowTabNum.
 *  @param show Whether to show the messages window at all if it was hidden before.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
void msgwin_switch_tab(gint tabnum, gboolean show)
{
        GtkWidget *widget = NULL;       /* widget to focus */

        switch (tabnum)
        {
                case MSG_SCRATCH: widget = msgwindow.scribble; break;
                case MSG_COMPILER: widget = msgwindow.tree_compiler; break;
                case MSG_STATUS: widget = msgwindow.tree_status; break;
                case MSG_MESSAGE: widget = msgwindow.tree_msg; break;
#ifdef HAVE_VTE
                case MSG_VTE: widget = (vte_info.have_vte) ? vc->vte : NULL; break;
#endif
                default: break;
        }

        /* the msgwin must be visible before we switch to the VTE page so that
         * the font settings are applied on realization */
        if (show)
                msgwin_show_hide(TRUE);
        gtk_notebook_set_current_page(GTK_NOTEBOOK(msgwindow.notebook), tabnum);
        if (show && widget)
                gtk_widget_grab_focus(widget);
}


/**
 *  Removes all messages from a tab specified by @a tabnum in the messages window.
 *
 *  @param tabnum An index of a tab in the messages window which should be cleared.
 *                Valid values are @c MSG_STATUS, @c MSG_COMPILER and @c MSG_MESSAGE.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
void msgwin_clear_tab(gint tabnum)
{
        GtkListStore *store = NULL;

        switch (tabnum)
        {
                case MSG_MESSAGE:
                        store = msgwindow.store_msg;
                        break;

                case MSG_COMPILER:
                        gtk_list_store_clear(msgwindow.store_compiler);
                        build_menu_update(NULL);        /* update next error items */
                        return;

                case MSG_STATUS: store = msgwindow.store_status; break;
                default: return;
        }
        if (store == NULL)
                return;
        gtk_list_store_clear(store);
}