* src/gramps_main.py: implement a basic history mechanism

* src/gramps.glade: add back and forward buttons


svn: r2000

src/gramps.glade

@@ -633,9 +633,8 @@
 		<widget class="button" id="button2">
 		  <property name="visible">True</property>
 		  <property name="tooltip" translatable="yes">Open file</property>
-		  <property name="label" translatable="yes">Open</property>
+		  <property name="label">gtk-open</property>
-		  <property name="use_underline">True</property>
+		  <property name="use_stock">True</property>
-		  <property name="stock_pixmap">gtk-open</property>
 		  <signal name="clicked" handler="on_open_activate"/>
 		</widget>
 	      </child>
@@ -644,20 +643,40 @@
 		<widget class="button" id="button3">
 		  <property name="visible">True</property>
 		  <property name="tooltip" translatable="yes">Save file</property>
-		  <property name="label" translatable="yes">Save</property>
+		  <property name="label">gtk-save</property>
-		  <property name="use_underline">True</property>
+		  <property name="use_stock">True</property>
-		  <property name="stock_pixmap">gtk-save</property>
 		  <signal name="clicked" handler="on_save_activate"/>
 		</widget>
 	      </child>
 
+	      <child>
+		<widget class="button" id="back_btn">
+		  <property name="visible">True</property>
+		  <property name="label">gtk-go-back</property>
+		  <property name="use_stock">True</property>
+		  <property name="new_group">True</property>
+		  <signal name="clicked" handler="on_back_clicked" last_modification_time="Thu, 14 Aug 2003 02:19:55 GMT"/>
+		</widget>
+		<packing>
+		  <property name="new_group">True</property>
+		</packing>
+	      </child>
+
+	      <child>
+		<widget class="button" id="fwd_btn">
+		  <property name="visible">True</property>
+		  <property name="label">gtk-go-forward</property>
+		  <property name="use_stock">True</property>
+		  <signal name="clicked" handler="on_fwd_clicked" last_modification_time="Thu, 14 Aug 2003 02:20:17 GMT"/>
+		</widget>
+	      </child>
+
 	      <child>
 		<widget class="button" id="button97">
 		  <property name="visible">True</property>
 		  <property name="tooltip" translatable="yes">Make the Home Person the active person</property>
-		  <property name="label" translatable="yes">Home</property>
+		  <property name="label">gtk-home</property>
-		  <property name="use_underline">True</property>
+		  <property name="use_stock">True</property>
-		  <property name="stock_pixmap">gtk-home</property>
 		  <signal name="clicked" handler="on_home_clicked"/>
 		</widget>
 	      </child>
@@ -692,9 +711,8 @@
 		<widget class="button" id="addbtn">
 		  <property name="visible">True</property>
 		  <property name="tooltip" translatable="yes">Add a new item</property>
-		  <property name="label" translatable="yes">Add</property>
+		  <property name="label">gtk-add</property>
-		  <property name="use_underline">True</property>
+		  <property name="use_stock">True</property>
-		  <property name="stock_pixmap">gtk-add</property>
 		  <property name="new_group">True</property>
 		  <signal name="clicked" handler="on_addbtn_clicked" last_modification_time="Sun, 22 Sep 2002 04:17:19 GMT"/>
 		</widget>
@@ -707,9 +725,8 @@
 		<widget class="button" id="removebtn">
 		  <property name="visible">True</property>
 		  <property name="tooltip" translatable="yes">Remove the currently selected item</property>
-		  <property name="label" translatable="yes">Remove</property>
+		  <property name="label">gtk-remove</property>
-		  <property name="use_underline">True</property>
+		  <property name="use_stock">True</property>
-		  <property name="stock_pixmap">gtk-remove</property>
 		  <signal name="clicked" handler="on_removebtn_clicked" last_modification_time="Sun, 22 Sep 2002 04:17:33 GMT"/>
 		</widget>
 	      </child>

src/gramps_main.py

@@ -129,6 +129,9 @@ class Gramps:
         # This will never contain data - It will be replaced by either
         # a GrampsXML or GrampsZODB
 
+        self.history = []
+        self.hindex = -1
+        
         self.db = RelLib.GrampsDB()
         self.db.set_iprefix(GrampsCfg.iprefix)
         self.db.set_oprefix(GrampsCfg.oprefix)
@@ -373,6 +376,8 @@ class Gramps:
         self.editbtn = self.gtop.get_widget('editbtn')
 
         self.gtop.signal_autoconnect({
+            "on_back_clicked" : self.back_clicked,
+            "on_fwd_clicked" : self.fwd_clicked,
             "on_editbtn_clicked" : self.edit_button_clicked,
             "on_addbtn_clicked" : self.add_button_clicked,
             "on_removebtn_clicked" : self.remove_button_clicked,
@@ -445,6 +450,35 @@ class Gramps:
             
         self.topWindow.show()
 
+    def set_buttons(self,val):
+        self.report_menu.set_sensitive(val)
+        self.tools_menu.set_sensitive(val)
+        self.report_button.set_sensitive(val)
+        self.tool_button.set_sensitive(val)
+        self.remove_button.set_sensitive(val)
+        self.edit_button.set_sensitive(val)
+        
+    def back_clicked(self,obj):
+        if self.hindex > 0:
+            try:
+                self.hindex -= 1
+                self.active_person = self.db.getPerson(self.history[self.hindex])
+                self.modify_statusbar()
+                self.goto_active_person()
+            except:
+                self.set_buttons(0)
+
+    def fwd_clicked(self,obj):
+        if self.hindex+1 < len(self.history):
+            try:
+                self.hindex += 1
+                self.active_person = self.db.getPerson(self.history[self.hindex])
+                self.modify_statusbar()
+                self.goto_active_person()
+                self.set_buttons(1)
+            except:
+                self.set_buttons(0)
+
     def change_alpha_page(self,obj,junk,page):
         """Change the page. Be careful not to take action while the pages
         are begin removed. If clearing_tabs is set, then we don't do anything"""
@@ -787,6 +821,9 @@ class Gramps:
         const.familyAttributes = const.init_family_attribute_list()
         const.familyRelations = const.init_family_relation_list()
 
+        self.history = []
+        self.hindex = -1
+
         self.clear_person_tabs()
         
         if zodb == 1:
@@ -1428,16 +1465,15 @@ class Gramps:
             self.active_person = person
             self.modify_statusbar()
             if person:
-            val = 1
+                if self.hindex+1 < len(self.history):
-        else:
+                    self.history = self.history[0:self.hindex+1]
-            val = 0
+                self.history.append(person.getId())
+                self.hindex += 1
                     
-        self.report_menu.set_sensitive(val)
+        if person:
-        self.tools_menu.set_sensitive(val)
+            self.set_buttons(1)
-        self.report_button.set_sensitive(val)
+        else:
-        self.tool_button.set_sensitive(val)
+            self.set_buttons(0)
-        self.remove_button.set_sensitive(val)
-        self.edit_button.set_sensitive(val)
         
     def modify_statusbar(self):
         
@@ -1800,8 +1836,7 @@ class Gramps:
         self.statusbar.set_progress_percentage(1.0)
 
         person = self.db.getDefaultPerson()
-        if person:
+        self.change_active_person(person)
-            self.active_person = person
 
         self.full_update()
         self.statusbar.set_progress_percentage(0.0)