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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2014 Daniel Carl
*
* 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 3 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, see http://www.gnu.org/licenses/.
*/
#include "config.h"
#include "main.h"
#include "completion.h"
extern VbCore vb;
static struct {
GtkWidget *win;
GtkWidget *tree;
int active; /* number of the current active tree item */
CompletionSelectFunc selfunc;
} comp;
static gboolean tree_selection_func(GtkTreeSelection *selection,
GtkTreeModel *model, GtkTreePath *path, gboolean selected, gpointer data);
gboolean completion_create(GtkTreeModel *model, CompletionSelectFunc selfunc,
gboolean back)
{
GtkCellRenderer *renderer;
GtkTreeSelection *selection;
GtkTreeViewColumn *column;
GtkRequisition size;
GtkTreePath *path;
GtkTreeIter iter;
int height, width;
/* if there is only one match - don't build the tree view */
if (gtk_tree_model_iter_n_children(model, NULL) == 1) {
char *value;
path = gtk_tree_path_new_from_indices(0, -1);
if (gtk_tree_model_get_iter(model, &iter, path)) {
gtk_tree_model_get(model, &iter, COMPLETION_STORE_FIRST, &value, -1);
/* call the select function */
selfunc(value);
g_free(value);
g_object_unref(model);
return false;
}
}
comp.selfunc = selfunc;
/* prepare the tree view */
comp.win = gtk_scrolled_window_new(NULL, NULL);
comp.tree = gtk_tree_view_new();
#ifndef HAS_GTK3
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(comp.win), GTK_POLICY_NEVER, GTK_POLICY_NEVER);
#endif
gtk_box_pack_end(GTK_BOX(vb.gui.box), comp.win, false, false, 0);
gtk_container_add(GTK_CONTAINER(comp.win), comp.tree);
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(comp.tree), false);
/* we have only on line per item so we can use the faster fixed heigh mode */
gtk_tree_view_set_fixed_height_mode(GTK_TREE_VIEW(comp.tree), true);
gtk_tree_view_set_model(GTK_TREE_VIEW(comp.tree), model);
g_object_unref(model);
VB_WIDGET_OVERRIDE_TEXT(comp.tree, VB_GTK_STATE_NORMAL, &vb.style.comp_fg[VB_COMP_NORMAL]);
VB_WIDGET_OVERRIDE_BASE(comp.tree, VB_GTK_STATE_NORMAL, &vb.style.comp_bg[VB_COMP_NORMAL]);
VB_WIDGET_OVERRIDE_TEXT(comp.tree, VB_GTK_STATE_SELECTED, &vb.style.comp_fg[VB_COMP_ACTIVE]);
VB_WIDGET_OVERRIDE_BASE(comp.tree, VB_GTK_STATE_SELECTED, &vb.style.comp_bg[VB_COMP_ACTIVE]);
VB_WIDGET_OVERRIDE_TEXT(comp.tree, VB_GTK_STATE_ACTIVE, &vb.style.comp_fg[VB_COMP_ACTIVE]);
VB_WIDGET_OVERRIDE_BASE(comp.tree, VB_GTK_STATE_ACTIVE, &vb.style.comp_bg[VB_COMP_ACTIVE]);
/* prepare the selection */
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(comp.tree));
gtk_tree_selection_set_mode(selection, GTK_SELECTION_BROWSE);
gtk_tree_selection_set_select_function(selection, tree_selection_func, NULL, NULL);
/* get window dimension */
gtk_window_get_size(GTK_WINDOW(vb.gui.window), &width, &height);
/* prepare first column */
column = gtk_tree_view_column_new();
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_append_column(GTK_TREE_VIEW(comp.tree), column);
renderer = gtk_cell_renderer_text_new();
g_object_set(renderer,
"font-desc", vb.style.comp_font,
"ellipsize", PANGO_ELLIPSIZE_MIDDLE,
NULL
);
gtk_tree_view_column_pack_start(column, renderer, true);
gtk_tree_view_column_add_attribute(column, renderer, "text", COMPLETION_STORE_FIRST);
gtk_tree_view_column_set_min_width(column, 2 * width/3);
/* prepare second column */
#ifdef FEATURE_TITLE_IN_COMPLETION
column = gtk_tree_view_column_new();
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_append_column(GTK_TREE_VIEW(comp.tree), column);
renderer = gtk_cell_renderer_text_new();
g_object_set(renderer,
"font-desc", vb.style.comp_font,
"ellipsize", PANGO_ELLIPSIZE_END,
NULL
);
gtk_tree_view_column_pack_start(column, renderer, true);
gtk_tree_view_column_add_attribute(column, renderer, "text", COMPLETION_STORE_SECOND);
#endif
/* to set the height for the treeview the tree must be realized first */
gtk_widget_show(comp.tree);
/* this prevents the first item to be placed out of view if the completion
* is shown */
while (gtk_events_pending()) {
gtk_main_iteration();
}
/* use max 1/3 of window height for the completion */
#ifdef HAS_GTK3
gtk_widget_get_preferred_size(comp.tree, NULL, &size);
height /= 3;
gtk_scrolled_window_set_min_content_height(
GTK_SCROLLED_WINDOW(comp.win),
size.height > height ? height : size.height
);
#else
gtk_widget_size_request(comp.tree, &size);
height /= 3;
if (size.height > height) {
gtk_widget_set_size_request(comp.win, -1, height);
}
#endif
vb.mode->flags |= FLAG_COMPLETION;
/* set to -1 to have the cursor on first or last item set in move_cursor */
comp.active = -1;
completion_next(back);
gtk_widget_show(comp.win);
return true;
}
void completion_next(gboolean back)
{
int rows;
GtkTreePath *path;
GtkTreeView *tree = GTK_TREE_VIEW(comp.tree);
rows = gtk_tree_model_iter_n_children(gtk_tree_view_get_model(tree), NULL);
if (back) {
/* step back */
if (--comp.active < 0) {
comp.active = rows - 1;
}
} else {
/* step forward */
if (++comp.active >= rows) {
comp.active = 0;
}
}
/* get new path and move cursor to it */
path = gtk_tree_path_new_from_indices(comp.active, -1);
gtk_tree_view_set_cursor(tree, path, NULL, false);
gtk_tree_path_free(path);
}
void completion_clean(void)
{
vb.mode->flags &= ~FLAG_COMPLETION;
if (comp.win) {
gtk_widget_destroy(comp.win);
comp.win = comp.tree = NULL;
}
}
static gboolean tree_selection_func(GtkTreeSelection *selection,
GtkTreeModel *model, GtkTreePath *path, gboolean selected, gpointer data)
{
char *value;
GtkTreeIter iter;
/* if not selected means the item is going to be selected which we are
* interested in */
if (!selected && gtk_tree_model_get_iter(model, &iter, path)) {
gtk_tree_model_get(model, &iter, COMPLETION_STORE_FIRST, &value, -1);
comp.selfunc(value);
g_free(value);
}
return true;
}
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