contentLister/src/gtkSearchWnd.c Source File

00001 /*
00002  * This file is part of contentLister.
00003  *
00004  * contentLister is free software: you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation, either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * contentLister is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program. If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00027 /* contentLister - A GTK based content lister (read only) application on the eReader platform
00028  * Copyright (C) 2006-2008 iRex Technologies
00029  * All rights reserved.
00030  *
00031  */
00032 
00033 #define _GNU_SOURCE
00034 
00035 // system includes
00036 #include <string.h>
00037 #include <sys/types.h>
00038 
00039 // gtk includes
00040 #include <gdk/gdkkeysyms.h>
00041 #include <gtk/gtkbutton.h>
00042 #include <gtk/gtk.h>
00043 
00044 // ereader library includs
00045 #include <liberdm/display.h>
00046 #include <liberdm/erdm.h>
00047 #include <liberipc/eripctoolbar.h>
00048 #include <libermanifest/ermanifest.h>
00049 #include <libergtk/erGtkEntry.h>
00050 #include <libergtk/erGtkToggleButton.h>
00051 
00052 // local includes
00053 #include "contentListerLog.h"
00054 #include "erConnect.h"
00055 #include "system.h"
00056 #include "gtkPincodeScreen.h"
00057 #include "control.h"
00058 #include "displayUpdate.h"
00059 #include "erbusy.h"
00060 #include "erMdsContent.h"
00061 #include "gtkSearchWnd.h"
00062 #include "languages.h"
00063 #include "pagebar.h"
00064 #include "search_files.h"
00065 #include "toolbar.h"
00066 
00067 
00068 // local data
00069 static swSearch_t  g_wnd;
00070 
00071 // local functions
00072 static gboolean delayed_on_searchbutton_toggled(gpointer data);
00073 
00074 
00076 // event handlers
00078 
00079 static void on_changed(GtkEditable * widget, gpointer data)
00080 {
00081     CL_SEARCHPRINTF("entry");
00082 
00083     // check for illegal characters in search pattern
00084     const char* illegal_chars = ILLEGAL_FILENAME_CHARS;
00085     const char* pattern = gtk_entry_get_text(GTK_ENTRY(widget));
00086     //
00087     char* new_pattern = alloca( strlen(pattern) + 1 );
00088     strcpy(new_pattern, pattern);
00089     //
00090     gboolean found = FALSE;
00091     char* cp = new_pattern;
00092     while (*cp)
00093     {
00094         if ( strchr(illegal_chars, *cp) )
00095         {
00096             *cp = '-';
00097             found = TRUE;
00098         }
00099         cp++;
00100     }
00101     if (found)
00102     {
00103         CL_SEARCHPRINTF("illegal pattern [%s] new pattern [%s]", pattern, new_pattern);
00104         gtk_entry_set_text(GTK_ENTRY(widget), new_pattern);
00105     }
00106 }
00107 
00108 static gboolean on_expose(GtkWidget * widget, GdkEventExpose * event, gpointer data)
00109 {
00110     CL_SEARCHPRINTF("entry");
00111 
00112     gtk_widget_grab_focus(GTK_WIDGET(g_wnd.patternEntry));
00113 
00114     // select all characters, cursor at end of input field
00115     gtk_editable_select_region(GTK_EDITABLE(g_wnd.patternEntry), 0, -1);
00116 
00117     display_update_request_screen_refresh(LISTER_EXPOSE_LEVEL);
00118 
00119     return FALSE;
00120 }
00121 
00122 
00123 // search button selected
00124 static void on_searchbutton_toggled_event(GtkToggleButton * button, gpointer ptr)
00125 {
00126     CL_SEARCHPRINTF("entry");
00127     
00128     gboolean active = gtk_toggle_button_get_active(button);
00129     if (active)
00130     {
00131         erbusy_blink();
00132 
00133         // wait for button shown selected, then start seach
00134         g_timeout_add(200, delayed_on_searchbutton_toggled, button);
00135     }
00136 }
00137 
00138 static gboolean delayed_on_searchbutton_toggled(gpointer data)
00139 {
00140     CL_SEARCHPRINTF("entry");
00141 
00142     GtkToggleButton* button = GTK_TOGGLE_BUTTON(data);
00143     const char*      pattern = "";
00144     
00145     // get search string
00146     if (g_wnd.patternEntry)
00147     {
00148         pattern = gtk_entry_get_text(GTK_ENTRY(g_wnd.patternEntry));
00149     }
00150     
00151     // get current location, start search
00152     char  root[ERMDS_MAX_FILENAME_SIZE] = "";
00153     const char* sCurrPath = ctrl_get_abscurr_location(root, sizeof(root));    
00154     execSearch(sCurrPath, pattern);
00155 
00156     // show the search result
00157     display_update_increase_level(LISTER_EXPOSE_LEVEL);
00158     gtk_toggle_button_set_active(button, FALSE);
00159     ctrl_hide_search_wnd();
00160     ctrl_display_search_result();
00161 
00162     return FALSE;  // don't call me anymore
00163 }
00164 
00166 // helper construction function
00168 // object hierarchy
00169 //     parent
00170 //       |-- g_wnd.patternTag (gtk_label)
00171 //       |-- g_wnd.patternEntry (gtk_entry)
00172 //       |-- g_wnd.patternExpl (gtk_label)
00173 //
00174 static void createPatternItem(GtkWidget* parent)
00175 {
00176     GtkWidget* widget;
00177 
00178     CL_SEARCHPRINTF("entry");    
00179 
00180     // pattern tag
00181     widget = gtk_label_new("");
00182     gtk_widget_set_name(GTK_WIDGET(widget), "search_wnd_text_bold");
00183     gtk_widget_set_size_request(GTK_WIDGET(widget), SEARCH_ITEM_WIDTH, SEARCH_TAG_HEIGHT);
00184     gtk_misc_set_alignment(GTK_MISC(widget), 0, 1.0);
00185     gtk_box_pack_start(GTK_BOX(parent), widget, FALSE, FALSE, 0);
00186     gtk_widget_show(widget);
00187     g_wnd.patternTag = widget;
00188 
00189     // patternEdit
00190     widget = ergtk_entry_new();
00191     gtk_widget_set_size_request(widget, SEARCH_ITEM_WIDTH, SEARCH_NAME_HEIGHT);
00192     g_signal_connect_after(G_OBJECT(widget), "changed-stable", G_CALLBACK(on_changed), NULL);
00193     gtk_box_pack_start(GTK_BOX(parent), widget, FALSE, FALSE, 0);    
00194     gtk_widget_show(widget);
00195     g_wnd.patternEntry = widget;
00196 
00197     // pattern explanation
00198     widget = gtk_label_new("");
00199     gtk_widget_set_name(GTK_WIDGET(widget), "search_wnd_text");
00200     gtk_widget_set_size_request(GTK_WIDGET(widget), SEARCH_ITEM_WIDTH, SEARCH_NAME_EXPL_HEIGHT);
00201     gtk_label_set_single_line_mode(GTK_LABEL(widget), FALSE);
00202     gtk_label_set_line_wrap(GTK_LABEL(widget), TRUE);
00203     gtk_misc_set_alignment(GTK_MISC(widget), 0, 0.0);
00204     gtk_box_pack_start(GTK_BOX(parent), widget, FALSE, FALSE, 0);
00205     gtk_widget_show(widget);
00206     g_wnd.patternExpl = widget;
00207 }
00208 
00209 // object hierarchy:
00210 //     parent
00211 //       |-- g_wnd.searchTag (gtk_label)
00212 //       |-- alignment
00213 //             |-- g_wnd.searchButton (gtk_toggle_button)
00214 //
00215 static void createSearchButtonItem(GtkWidget* parent)
00216 {
00217     GtkWidget* widget;
00218     GtkWidget* alignment;
00219 
00220     CL_SEARCHPRINTF("entry");
00221 
00222     // pattern tag
00223     widget = gtk_label_new("");
00224     gtk_widget_set_name(GTK_WIDGET(widget), "search_wnd_text_bold");
00225     gtk_widget_set_size_request(GTK_WIDGET(widget), SEARCH_ITEM_WIDTH, SEARCH_TAG_HEIGHT);
00226     gtk_misc_set_alignment(GTK_MISC(widget), 0, 1.0);
00227     gtk_box_pack_start(GTK_BOX(parent), widget, FALSE, FALSE, 0);
00228     gtk_widget_show(widget);
00229     g_wnd.searchTag = widget;
00230 
00231     // alignment
00232     widget = gtk_alignment_new(1.0, 0.5, 0.0, 0.0);
00233     gtk_widget_set_size_request(GTK_WIDGET(widget), -1, SEARCH_BUTTON_AREA_HEIGHT);
00234     gtk_container_add(GTK_CONTAINER(parent), widget);
00235     gtk_widget_show(widget);
00236     alignment = widget;
00237 
00238     // button    
00239     widget = ergtk_toggle_button_new_with_label("");
00240     gtk_widget_set_size_request(GTK_WIDGET(widget), SEARCH_BUTTON_WIDTH, SEARCH_BUTTON_HEIGHT);
00241     g_signal_connect(G_OBJECT(widget), "toggled", G_CALLBACK(on_searchbutton_toggled_event), NULL);
00242     gtk_container_add(GTK_CONTAINER(alignment), widget);
00243     gtk_widget_show(widget);
00244     g_wnd.searchButton = widget;
00245 }
00246 
00247 // object hierarchy
00248 //     parent
00249 //       |-- background (event-box)
00250 //             |-- alignment
00251 //                   |-- vbox
00252 //                         |-- pattern item
00253 //                         |-- button item
00254 //
00255 GtkWidget* create_search_wnd(GtkWidget* parent)
00256 {
00257     CL_SEARCHPRINTF("entry");
00258 
00259     // main window
00260     g_wnd.window = parent;
00261     g_signal_connect(G_OBJECT(g_wnd.window), "expose-event", G_CALLBACK(on_expose), NULL);
00262 
00263     // background
00264     GtkWidget* background = gtk_event_box_new();
00265     gtk_widget_set_name(GTK_WIDGET(background), "search_wnd_background");
00266     gtk_widget_set_size_request(GTK_WIDGET(background), SEARCH_BK_IMG_WIDTH, SEARCH_BK_IMG_HEIGHT);
00267     gtk_container_add(GTK_CONTAINER(parent), background);
00268     gtk_widget_show(background);
00269         
00270     // alignment
00271     GtkWidget* alignment = gtk_alignment_new(0.0, 0.0, 0.0, 0.0);
00272     gtk_alignment_set_padding( GTK_ALIGNMENT(alignment), 
00273                                SEARCH_VBORDER, 
00274                                SEARCH_VBORDER, 
00275                                SEARCH_HBORDER, 
00276                                SEARCH_HBORDER );
00277     gtk_container_add(GTK_CONTAINER(background), alignment);
00278     gtk_widget_show(alignment);
00279 
00280     // vbox
00281     GtkWidget*vbox = gtk_vbox_new(FALSE, SEARCH_WND_ITEM_SPACING);
00282     gtk_container_add(GTK_CONTAINER(alignment), vbox);
00283     gtk_widget_show(vbox);
00284    
00285     // pattern item
00286     createPatternItem(vbox);
00287 
00288     // search item
00289     createSearchButtonItem(vbox);
00290 
00291     return background;
00292 }
00293 
00294 // set fixed screen texts
00295 void search_wnd_set_text()
00296 {
00297     CL_SEARCHPRINTF("entry");
00298 
00299     // pattern item
00300     gtk_label_set_text( GTK_LABEL(g_wnd.patternTag),  _("Step 1: Please enter the search pattern") );
00301     gtk_label_set_text( GTK_LABEL(g_wnd.patternExpl), _("Multiple search strings can be separated with a space.\n"
00302                                                         "Search strings containing spaces should be enclosed in double quotes (\").\n"
00303                                                         "Narrow your search results by clicking the 'Search' icon again.") );
00304 
00305     // search item
00306     gtk_label_set_text( GTK_LABEL(g_wnd.searchTag), _("Step 2: Please click on the 'Search' button to start your enquiry") );
00307     gtk_button_set_label( GTK_BUTTON(g_wnd.searchButton), _("Search") );
00308 }
00309