* This file is part of DisOrder
* Copyright (C) 2008 Richard Kettlewell
*
- * This program is free software; you can redistribute it and/or modify
+ * 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
+ * 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.
- *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file disobedience/choose.c
* @brief Hierarchical track selection and search
* TRACK_COLUMN="" and ISFILE_COLUMN=FALSE (so that they don't get check boxes,
* lengths, etc).
*
- * TODO We do a period sweep which kills contracted nodes, putting back
- * placeholders, and updating expanded nodes to keep up with server-side
- * changes. (We could trigger the latter off rescan complete notifications?)
- *
* TODO:
- * - sweep up contracted nodes
- * - update when content may have changed (e.g. after a rescan)
- * - proper sorting
+ * - sweep up contracted nodes, replacing their content with a placeholder
*/
#include "disobedience.h"
#include "choose.h"
+#include "multidrag.h"
+#include "queue-generic.h"
+#include <gdk/gdkkeysyms.h>
+
+/** @brief Drag types */
+const GtkTargetEntry choose_targets[] = {
+ {
+ PLAYABLE_TRACKS, /* drag type */
+ GTK_TARGET_SAME_APP|GTK_TARGET_OTHER_WIDGET, /* copying between widgets */
+ PLAYABLE_TRACKS_ID /* ID value */
+ },
+ {
+ .target = NULL
+ }
+};
/** @brief The current selection tree */
GtkTreeStore *choose_store;
/** @brief Count of file listing operations in flight */
static int choose_list_in_flight;
-/** @brief Count of files inserted in current batch of listing operations */
-static int choose_inserted;
+/** @brief If nonzero autocollapse column won't be set */
+static int choose_suppress_set_autocollapse;
static char *choose_get_string(GtkTreeIter *iter, int column) {
gchar *gs;
return choose_get_string(iter, SORT_COLUMN);
}
+char *choose_get_display(GtkTreeIter *iter) {
+ return choose_get_string(iter, NAME_COLUMN);
+}
+
int choose_is_file(GtkTreeIter *iter) {
gboolean isfile;
gtk_tree_model_get(GTK_TREE_MODEL(choose_store), iter,
return choose_get_string(iter, TRACK_COLUMN)[0] == 0;
}
+int choose_can_autocollapse(GtkTreeIter *iter) {
+ gboolean autocollapse;
+ gtk_tree_model_get(GTK_TREE_MODEL(choose_store), iter,
+ AUTOCOLLAPSE_COLUMN, &autocollapse,
+ -1);
+ return autocollapse;
+}
+
/** @brief Remove node @p it and all its children
- * @param Iterator, updated to point to next
+ * @param it Iterator, updated to point to next
* @return True if iterator remains valid
+ *
+ * TODO is this necessary? gtk_tree_store_remove() does not document what
+ * happens to children.
*/
static gboolean choose_remove_node(GtkTreeIter *it) {
GtkTreeIter child[1];
* @param parent_ref Node to populate or NULL to fill root
* @param nvec Number of children to add
* @param vec Children
- * @param files 1 if children are files, 0 if directories
+ * @param isfile 1 if children are files, 0 if directories
*
* Adjusts the set of files (or directories) below @p parent_ref to match those
* listed in @p nvec and @p vec.
*
- * @parent_ref will be destroyed.
+ * @p parent_ref will be destroyed.
*/
static void choose_populate(GtkTreeRowReference *parent_ref,
int nvec, char **vec,
int isfile) {
const char *type = isfile ? "track" : "dir";
+ //fprintf(stderr, "%d new children of type %s\n", nvec, type);
+ if(!nvec)
+ goto skip;
/* Compute parent_* */
GtkTreeIter pit[1], *parent_it;
GtkTreePath *parent_path;
/*fprintf(stderr, "choose_populate %s: populating the root\n",
type);*/
}
- /* Remove unwanted nodes and find out which we must add */
- //fprintf(stderr, " trimming unwanted %s nodes\n", type);
+ /* Both td[] and the current node set are sorted so we can do a single linear
+ * pass to insert new nodes and remove unwanted ones. The total performance
+ * may be worse than linear depending on the performance of GTK+'s insert and
+ * delete operations. */
+ //fprintf(stderr, "sorting tracks\n");
struct tracksort_data *td = tracksort_init(nvec, vec, type);
GtkTreeIter it[1];
gboolean itv = gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store),
it,
parent_it);
- while(itv) {
- const char *track = choose_get_track(it);
- int keep;
-
- if(!track) {
- /* Always kill placeholders */
- //fprintf(stderr, " kill a placeholder\n");
- keep = 0;
- } else if(choose_is_file(it) == isfile) {
- /* This is the type we care about */
- //fprintf(stderr, " %s is a %s\n", track, type);
- int n;
- for(n = 0; n < nvec && strcmp(td[n].track, track); ++n)
- ;
- if(n < nvec) {
- //fprintf(stderr, " ... and survives\n");
- td[n].extra = td;
- keep = 1;
- } else {
- //fprintf(stderr, " ... and is to be removed\n");
- keep = 0;
- }
+ int inserted = 0, deleted_placeholder = 0;
+ //fprintf(stderr, "inserting tracks type=%s\n", type);
+ while(nvec > 0 || itv) {
+ /*fprintf(stderr, "td[] = %s, it=%s [%s]\n",
+ nvec > 0 ? td->track : "(none)",
+ itv ? choose_get_track(it) : "(!itv)",
+ itv ? (choose_is_file(it) ? "file" : "dir") : "");*/
+ enum { INSERT, DELETE, SKIP_TREE, SKIP_BOTH } action;
+ const char *track = itv ? choose_get_track(it) : 0;
+ if(itv && !track) {
+ //fprintf(stderr, " placeholder\n");
+ action = DELETE;
+ ++deleted_placeholder;
+ } else if(nvec > 0 && itv) {
+ /* There's both a tree row and a td[] entry */
+ const int cmp = compare_tracks(td->sort, choose_get_sort(it),
+ td->display, choose_get_display(it),
+ td->track, track);
+ //fprintf(stderr, " cmp=%d\n", cmp);
+ if(cmp < 0)
+ /* td < it, so we insert td before it */
+ action = INSERT;
+ else if(cmp > 0) {
+ /* td > it, so we must either delete it (if the same type) or skip it */
+ if(choose_is_file(it) == isfile)
+ action = DELETE;
+ else
+ action = SKIP_TREE;
+ } else
+ /* td = it, so we step past both */
+ action = SKIP_BOTH;
+ } else if(nvec > 0) {
+ /* We've reached the end of the tree rows, but new have tracks left in
+ * td[] */
+ //fprintf(stderr, " inserting\n");
+ action = INSERT;
} else {
- /* Keep wrong-type entries */
- //fprintf(stderr, " %s has wrong type\n", track);
- keep = 1;
+ /* We've reached the end of the new tracks from td[], but there are
+ * further tracks in the tree */
+ //fprintf(stderr, " deleting\n");
+ if(choose_is_file(it) == isfile)
+ action = DELETE;
+ else
+ action = SKIP_TREE;
}
- if(keep)
- itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
- else
- itv = choose_remove_node(it);
- }
- /* Add nodes we don't have */
- int inserted = 0;
- //fprintf(stderr, " inserting new %s nodes\n", type);
- for(int n = 0; n < nvec; ++n) {
- if(!td[n].extra) {
- //fprintf(stderr, " %s was not found\n", td[n].track);
- gtk_tree_store_append(choose_store, it, parent_it);
- gtk_tree_store_set(choose_store, it,
- NAME_COLUMN, td[n].display,
+
+ switch(action) {
+ case INSERT: {
+ //fprintf(stderr, " INSERT %s\n", td->track);
+ /* Insert a new row from td[] before it, or at the end if it is no longer
+ * valid */
+ GtkTreeIter child[1];
+ gtk_tree_store_insert_before(choose_store,
+ child, /* new row */
+ parent_it, /* parent */
+ itv ? it : NULL); /* successor */
+ gtk_tree_store_set(choose_store, child,
+ NAME_COLUMN, td->display,
ISFILE_COLUMN, isfile,
- TRACK_COLUMN, td[n].track,
- SORT_COLUMN, td[n].sort,
+ TRACK_COLUMN, td->track,
+ SORT_COLUMN, td->sort,
+ AUTOCOLLAPSE_COLUMN, FALSE,
-1);
/* Update length and state; we expect this to kick off length lookups
* rather than necessarily get the right value the first time round. */
- choose_set_state_callback(0, 0, it, 0);
- ++inserted;
+ choose_set_state_callback(0, 0, child, 0);
/* If we inserted a directory, insert a placeholder too, so it appears to
* have children; it will be deleted when we expand the directory. */
if(!isfile) {
//fprintf(stderr, " inserting a placeholder\n");
GtkTreeIter placeholder[1];
- gtk_tree_store_append(choose_store, placeholder, it);
+ gtk_tree_store_append(choose_store, placeholder, child);
gtk_tree_store_set(choose_store, placeholder,
NAME_COLUMN, "Waddling...",
TRACK_COLUMN, "",
ISFILE_COLUMN, FALSE,
-1);
}
+ ++inserted;
+ ++td;
+ --nvec;
+ break;
+ }
+ case SKIP_BOTH:
+ //fprintf(stderr, " SKIP_BOTH\n");
+ ++td;
+ --nvec;
+ /* fall thru */
+ case SKIP_TREE:
+ //fprintf(stderr, " SKIP_TREE\n");
+ itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
+ break;
+ case DELETE:
+ //fprintf(stderr, " DELETE\n");
+ itv = choose_remove_node(it);
+ break;
}
}
- //fprintf(stderr, " %d nodes inserted\n", inserted);
- if(inserted) {
- /* TODO sort the children */
- }
+ /*fprintf(stderr, "inserted=%d deleted_placeholder=%d\n\n",
+ inserted, deleted_placeholder);*/
if(parent_ref) {
/* If we deleted a placeholder then we must re-expand the row */
- gtk_tree_view_expand_row(GTK_TREE_VIEW(choose_view), parent_path, FALSE);
+ if(deleted_placeholder) {
+ ++choose_suppress_set_autocollapse;
+ gtk_tree_view_expand_row(GTK_TREE_VIEW(choose_view), parent_path, FALSE);
+ --choose_suppress_set_autocollapse;
+ }
gtk_tree_row_reference_free(parent_ref);
gtk_tree_path_free(parent_path);
}
+skip:
/* We only notify others that we've inserted tracks when there are no more
* insertions pending, so that they don't have to keep track of how many
* requests they've made. */
- choose_inserted += inserted;
if(--choose_list_in_flight == 0) {
/* Notify interested parties that we inserted some tracks, AFTER making
* sure that the row is properly expanded */
- if(choose_inserted) {
- event_raise("choose-inserted-tracks", parent_it);
- choose_inserted = 0;
- }
+ //fprintf(stderr, "raising choose-more-tracks\n");
+ event_raise("choose-more-tracks", 0);
}
+ //fprintf(stderr, "choose_list_in_flight -> %d-\n", choose_list_in_flight);
}
static void choose_dirs_completed(void *v,
- const char *error,
+ const char *err,
int nvec, char **vec) {
- if(error) {
- popup_protocol_error(0, error);
+ if(err) {
+ popup_protocol_error(0, err);
return;
}
choose_populate(v, nvec, vec, 0/*!isfile*/);
}
static void choose_files_completed(void *v,
- const char *error,
+ const char *err,
int nvec, char **vec) {
- if(error) {
- popup_protocol_error(0, error);
+ if(err) {
+ popup_protocol_error(0, err);
return;
}
choose_populate(v, nvec, vec, 1/*isfile*/);
}
void choose_play_completed(void attribute((unused)) *v,
- const char *error) {
- if(error)
- popup_protocol_error(0, error);
+ const char *err) {
+ if(err)
+ popup_protocol_error(0, err);
}
static void choose_state_toggled
}
-static void choose_row_expanded(GtkTreeView attribute((unused)) *treeview,
- GtkTreeIter *iter,
- GtkTreePath *path,
- gpointer attribute((unused)) user_data) {
- /*fprintf(stderr, "row-expanded path=[%s]\n",
- gtk_tree_path_to_string(path));*/
- /* We update a node's contents whenever it is expanded, even if it was
- * already populated; the effect is that contracting and expanding a node
- * suffices to update it to the latest state on the server. */
+/** @brief (Re-)get the children of @p path
+ * @param path Path to target row
+ * @param iter Iterator pointing at target row
+ *
+ * Called from choose_row_expanded() to make sure that the contents are present
+ * and from choose_refill_callback() to (re-)synchronize.
+ */
+static void choose_refill_row(GtkTreePath *path,
+ GtkTreeIter *iter) {
const char *track = choose_get_track(iter);
disorder_eclient_files(client, choose_files_completed,
track,
choose_list_in_flight += 2;
}
+static void choose_row_expanded(GtkTreeView attribute((unused)) *treeview,
+ GtkTreeIter *iter,
+ GtkTreePath *path,
+ gpointer attribute((unused)) user_data) {
+ /*fprintf(stderr, "row-expanded path=[%s]\n\n",
+ gtk_tree_path_to_string(path));*/
+ /* We update a node's contents whenever it is expanded, even if it was
+ * already populated; the effect is that contracting and expanding a node
+ * suffices to update it to the latest state on the server. */
+ choose_refill_row(path, iter);
+ if(!choose_suppress_set_autocollapse) {
+ if(choose_auto_expanding) {
+ /* This was an automatic expansion; mark it the row for auto-collapse. */
+ gtk_tree_store_set(choose_store, iter,
+ AUTOCOLLAPSE_COLUMN, TRUE,
+ -1);
+ /*fprintf(stderr, "enable auto-collapse for %s\n",
+ gtk_tree_path_to_string(path));*/
+ } else {
+ /* This was a manual expansion. Inhibit automatic collapse on this row
+ * and all its ancestors. */
+ gboolean itv;
+ do {
+ gtk_tree_store_set(choose_store, iter,
+ AUTOCOLLAPSE_COLUMN, FALSE,
+ -1);
+ /*fprintf(stderr, "suppress auto-collapse for %s\n",
+ gtk_tree_model_get_string_from_iter(GTK_TREE_MODEL(choose_store),
+ iter));*/
+ GtkTreeIter child = *iter;
+ itv = gtk_tree_model_iter_parent(GTK_TREE_MODEL(choose_store),
+ iter,
+ &child);
+ } while(itv);
+ /* The effect of this is that if you expand a row that's actually a
+ * sibling of the real target of the auto-expansion, it stays expanded
+ * when you clear a search. That's find and good, but it _still_ stays
+ * expanded if you expand it and then collapse it.
+ *
+ * An alternative policy would be to only auto-collapse rows that don't
+ * have any expanded children (apart from ones also subject to
+ * auto-collapse). I'm not sure what the most usable policy is.
+ */
+ }
+ }
+}
+
+static void choose_auto_collapse_callback(GtkTreeView *tree_view,
+ GtkTreePath *path,
+ gpointer attribute((unused)) user_data) {
+ GtkTreeIter it[1];
+
+ gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store), it, path);
+ if(choose_can_autocollapse(it)) {
+ /*fprintf(stderr, "collapse %s\n",
+ gtk_tree_path_to_string(path));*/
+ gtk_tree_store_set(choose_store, it,
+ AUTOCOLLAPSE_COLUMN, FALSE,
+ -1);
+ gtk_tree_view_collapse_row(tree_view, path);
+ }
+}
+
+/** @brief Perform automatic collapse after a search is cleared */
+void choose_auto_collapse(void) {
+ gtk_tree_view_map_expanded_rows(GTK_TREE_VIEW(choose_view),
+ choose_auto_collapse_callback,
+ 0);
+}
+
+/** @brief Called from choose_refill() with each expanded row */
+static void choose_refill_callback(GtkTreeView attribute((unused)) *tree_view,
+ GtkTreePath *path,
+ gpointer attribute((unused)) user_data) {
+ GtkTreeIter it[1];
+
+ gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store), it, path);
+ choose_refill_row(path, it);
+}
+
+/** @brief Synchronize all visible data with the server
+ *
+ * Called at startup, when a rescan completes, and via periodic_slow().
+ */
+static void choose_refill(const char attribute((unused)) *event,
+ void attribute((unused)) *eventdata,
+ void attribute((unused)) *callbackdata) {
+ //fprintf(stderr, "choose_refill\n");
+ /* Update the root */
+ disorder_eclient_files(client, choose_files_completed, "", NULL, NULL);
+ disorder_eclient_dirs(client, choose_dirs_completed, "", NULL, NULL);
+ choose_list_in_flight += 2;
+ /* Update all expanded rows */
+ gtk_tree_view_map_expanded_rows(GTK_TREE_VIEW(choose_view),
+ choose_refill_callback,
+ 0);
+ //fprintf(stderr, "choose_list_in_flight -> %d+\n", choose_list_in_flight);
+}
+
+/** @brief Called for key-*-event on the main view
+ */
+static gboolean choose_key_event(GtkWidget attribute((unused)) *widget,
+ GdkEventKey *event,
+ gpointer user_data) {
+ /*fprintf(stderr, "choose_key_event type=%d state=%#x keyval=%#x\n",
+ event->type, event->state, event->keyval);*/
+ switch(event->keyval) {
+ case GDK_Page_Up:
+ case GDK_Page_Down:
+ case GDK_Up:
+ case GDK_Down:
+ case GDK_Home:
+ case GDK_End:
+ return FALSE; /* We'll take these */
+ case 'f': case 'F':
+ /* ^F is expected to start a search. We implement this by focusing the
+ * search entry box. */
+ if((event->state & ~(GDK_LOCK_MASK|GDK_SHIFT_MASK)) == GDK_CONTROL_MASK
+ && event->type == GDK_KEY_PRESS) {
+ choose_search_new();
+ return TRUE; /* Handled it */
+ }
+ break;
+ case 'g': case 'G':
+ /* ^G is expected to go the next match. We simulate a click on the 'next'
+ * button. */
+ if((event->state & ~(GDK_LOCK_MASK|GDK_SHIFT_MASK)) == GDK_CONTROL_MASK
+ && event->type == GDK_KEY_PRESS) {
+ choose_next_clicked(0, 0);
+ return TRUE; /* Handled it */
+ }
+ break;
+ }
+ /* Anything not handled we redirected to the search entry field */
+ gtk_widget_event(user_data, (GdkEvent *)event);
+ return TRUE; /* Handled it */
+}
+
+static gboolean choose_multidrag_predicate(GtkTreePath attribute((unused)) *path,
+ GtkTreeIter *iter) {
+ return choose_is_file(iter);
+}
+
+
+/** @brief Callback to add selected tracks to the selection data
+ *
+ * Called from choose_drag_data_get().
+ */
+static void choose_drag_data_get_collect(GtkTreeModel attribute((unused)) *model,
+ GtkTreePath attribute((unused)) *path,
+ GtkTreeIter *iter,
+ gpointer data) {
+ struct dynstr *const result = data;
+
+ if(choose_is_file(iter)) { /* no diretories */
+ dynstr_append_string(result, ""); /* no ID */
+ dynstr_append(result, '\n');
+ dynstr_append_string(result, choose_get_track(iter));
+ dynstr_append(result, '\n');
+ }
+}
+
+/** @brief Called to extract the dragged data from the choose view
+ * @param w Source widget (the tree view)
+ * @param dc Drag context
+ * @param data Where to put the answer
+ * @param info_ Target @c info parameter
+ * @param time_ Time data requested (for some reason not a @c time_t)
+ * @param user_data The queuelike
+ *
+ * Closely analogous to ql_drag_data_get(), and uses the same data format.
+ * IDs are sent as empty strings.
+ */
+static void choose_drag_data_get(GtkWidget *w,
+ GdkDragContext attribute((unused)) *dc,
+ GtkSelectionData *data,
+ guint attribute((unused)) info_,
+ guint attribute((unused)) time_,
+ gpointer attribute((unused)) user_data) {
+ struct dynstr result[1];
+ GtkTreeSelection *sel;
+
+ sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(w));
+ dynstr_init(result);
+ gtk_tree_selection_selected_foreach(sel,
+ choose_drag_data_get_collect,
+ result);
+ gtk_selection_data_set(data,
+ GDK_TARGET_STRING,
+ 8, (guchar *)result->vec, result->nvec);
+}
+
/** @brief Create the choose tab */
GtkWidget *choose_widget(void) {
/* Create the tree store. */
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
- G_TYPE_STRING);
+ G_TYPE_STRING,
+ G_TYPE_BOOLEAN);
/* Create the view */
choose_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(choose_store));
gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(choose_view), TRUE);
+ /* Suppress built-in typeahead find, we do our own search support. */
+ gtk_tree_view_set_enable_search(GTK_TREE_VIEW(choose_view), FALSE);
/* Create cell renderers and columns */
/* TODO use a table */
event_register("playing-track-changed", choose_set_state, 0);
event_register("search-results-changed", choose_set_state, 0);
event_register("lookups-completed", choose_set_state, 0);
+ event_register("choose-more-tracks", choose_menu_moretracks, 0);
- /* Fill the root */
- disorder_eclient_files(client, choose_files_completed, "", NULL, NULL);
- disorder_eclient_dirs(client, choose_dirs_completed, "", NULL, NULL);
+ /* After a rescan we update the choose tree. We get a rescan-complete
+ * automatically at startup and upon connection too. */
+ event_register("rescan-complete", choose_refill, 0);
/* Make the widget scrollable */
GtkWidget *scrolled = scroll_widget(choose_view);
FALSE/*expand*/, FALSE/*fill*/, 0/*padding*/);
g_object_set_data(G_OBJECT(vbox), "type", (void *)&choose_tabtype);
+
+ /* Redirect keyboard activity to the search widget */
+ g_signal_connect(choose_view, "key-press-event",
+ G_CALLBACK(choose_key_event), choose_search_entry);
+ g_signal_connect(choose_view, "key-release-event",
+ G_CALLBACK(choose_key_event), choose_search_entry);
+
+ /* Enable dragging of tracks out */
+ gtk_drag_source_set(choose_view,
+ GDK_BUTTON1_MASK,
+ choose_targets,
+ 1,
+ GDK_ACTION_COPY);
+ g_signal_connect(choose_view, "drag-data-get",
+ G_CALLBACK(choose_drag_data_get), NULL);
+ make_treeview_multidrag(choose_view,
+ choose_multidrag_predicate);
+
return vbox;
}
~mdw / disorder / blobdiff