DEV-43439: Added navigation buttons to the Home side panel.

Added Back, Forward, and Home buttons to the web view for the Home
side panel. Still more work to do here, but the basic functionality
is there; albeit hardcoded to secondlife.com.

I notice that you can click Back on the first page. Seems to be an
issue for the general media browser too. I'll file a JIRA for that.

4 files changed, 128 insertions, 15 deletions

diff --git a/indra/newview/llfloatersearch.cpp b/indra/newview/llfloatersearch.cpp
index c8ff36b4f4..4d3724a758 100644
--- a/indra/newview/llfloatersearch.cpp
+++ b/indra/newview/llfloatersearch.cpp
@@ -41,6 +41,7 @@
 
 LLFloaterSearch::LLFloaterSearch(const LLSD& key) :
 	LLFloater(key),
+	LLViewerMediaObserver(),
 	mBrowser(NULL)
 {
 	// declare a map that transforms a category name into
diff --git a/indra/newview/llpanelhome.cpp b/indra/newview/llpanelhome.cpp
index 5e7b9ef6bb..de7a85836d 100644
--- a/indra/newview/llpanelhome.cpp
+++ b/indra/newview/llpanelhome.cpp
@@ -40,6 +40,7 @@ static LLRegisterPanelClassWrapper<LLPanelHome> t_people("panel_sidetray_home");
 
 LLPanelHome::LLPanelHome() :
 	LLPanel(),
+	LLViewerMediaObserver(),
 	mBrowser(NULL),
 	mFirstView(true)
 {
@@ -48,6 +49,7 @@ LLPanelHome::LLPanelHome() :
 void LLPanelHome::onOpen(const LLSD& key)
 {
 	// display the home page the first time we open the panel
+	// *NOTE: this seems to happen during login. Can we avoid that?
 	if (mFirstView && mBrowser)
 	{
 		mBrowser->navigateHome();
@@ -60,10 +62,51 @@ BOOL LLPanelHome::postBuild()
     mBrowser = getChild<LLMediaCtrl>("browser");
     if (mBrowser)
 	{
+		mBrowser->addObserver(this);
 		mBrowser->setTrusted(true);
 		mBrowser->setHomePageUrl("http://www.secondlife.com/");
+
+		childSetAction("back", onClickBack, this);
+		childSetAction("forward", onClickForward, this);
+		childSetAction("home", onClickHome, this);
 	}
 
     return TRUE;
 }
 
+//static 
+void LLPanelHome::onClickBack(void* user_data)
+{
+	LLPanelHome *self = (LLPanelHome*)user_data;
+	if (self && self->mBrowser)
+	{
+		self->mBrowser->navigateBack();
+	}
+}
+
+//static 
+void LLPanelHome::onClickForward(void* user_data)
+{
+	LLPanelHome *self = (LLPanelHome*)user_data;
+	if (self && self->mBrowser)
+	{
+		self->mBrowser->navigateForward();
+	}
+}
+
+//static 
+void LLPanelHome::onClickHome(void* user_data)
+{
+	LLPanelHome *self = (LLPanelHome*)user_data;
+	if (self && self->mBrowser)
+	{
+		self->mBrowser->navigateHome();
+	}
+}
+
+void LLPanelHome::handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event)
+{
+	// update back/forward button state
+	childSetEnabled("back", mBrowser->canNavigateBack());
+	childSetEnabled("forward", mBrowser->canNavigateForward());
+}
diff --git a/indra/newview/llpanelhome.h b/indra/newview/llpanelhome.h
index d75e2c0d80..b5ca48b23f 100644
--- a/indra/newview/llpanelhome.h
+++ b/indra/newview/llpanelhome.h
@@ -36,13 +36,16 @@
 
 #include "llpanel.h"
 #include "llsd.h"
+#include "llviewermediaobserver.h"
 
 class LLMediaCtrl;
 
 /**
  * Base class for web-based Home side tray
  */
-class LLPanelHome : public LLPanel
+class LLPanelHome :
+	public LLPanel,
+	public LLViewerMediaObserver
 {
 public:
 	LLPanelHome();
@@ -50,7 +53,14 @@ public:
     /*virtual*/ BOOL postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
+	static void onClickBack(void* user_data);
+	static void onClickForward(void* user_data);
+	static void onClickHome(void* user_data);
+
 private:
+	// inherited from LLViewerMediaObserver
+	/*virtual*/ void handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event);
+
     LLMediaCtrl *mBrowser;
 	bool         mFirstView;
 };
diff --git a/indra/newview/skins/default/xui/en/panel_sidetray_home_tab.xml b/indra/newview/skins/default/xui/en/panel_sidetray_home_tab.xml
index 4fe1e08bf0..4b841b0a09 100644
--- a/indra/newview/skins/default/xui/en/panel_sidetray_home_tab.xml
+++ b/indra/newview/skins/default/xui/en/panel_sidetray_home_tab.xml
@@ -5,29 +5,88 @@
  height="570"
  min_height="350"
  label="home_tab"
+ help_topic="sidetray_home"
  layout="topleft"
  top="0"
  left="0"
  name="home_tab"
  width="333">
-  <panel
+  <layout_stack
    follows="all"
    height="550"
    layout="topleft"
    left="10"
-   help_topic="sidetray_home"
-   name="sidetray_home"
+   name="stack"
    top_pad="10"
    width="313">
-     <web_browser
-      border_visible="false"
-      follows="all"
-      height="550"
-      layout="topleft"
-      left="0"
-      name="browser"
-      start_url="data:text/html,%3Chtml%3E%3Cbody bgcolor=%22#2A2A2A%22 text=%22eeeeee%22%3E %3Ch3%3E %0D%0A%0D%0ALoading... %3C/h3%3E %3C/body%3E%3C/html%3E"
-      top="0"
-      width="313" />
-   </panel>
+    <layout_panel
+     auto_resize="false"
+     height="20"
+     layout="topleft"
+     left="0"
+     name="nav_controls"
+     top="0"
+     user_resize="false"
+     width="313">
+      <button
+       follows="left|top"
+       enabled="false"
+       height="20"
+       label="Back"
+       layout="topleft"
+       tab_stop="false"
+       left="0"
+       name="back"
+       top="0"
+       width="70">
+        <button.commit_callback
+         function="MediaBrowser.Back" />
+      </button>
+      <button
+       follows="left|top"
+       height="20"
+       enabled="false"
+       label="Forward"
+       layout="topleft"
+       tab_stop="false"
+       left_pad="3"
+       name="forward"
+       top_delta="0"
+       width="70">
+        <button.commit_callback
+         function="MediaBrowser.Forward" />
+      </button>
+      <button
+       follows="left|top"
+       height="20"
+       label="Home"
+       layout="topleft"
+       tab_stop="false"
+       left_pad="2"
+       name="home"
+       top_delta="0"
+       width="70">
+        <button.commit_callback
+         function="MediaBrowser.Home" />
+      </button>
+    </layout_panel>
+    <layout_panel
+     height="530"
+     layout="topleft"
+     left_delta="0"
+     name="browser_layout"
+     top_delta="0"
+     width="313">
+      <web_browser
+       border_visible="false"
+       follows="all"
+       height="530"
+       layout="topleft"
+       left="0"
+       name="browser"
+       start_url="data:text/html,%3Chtml%3E%3Cbody bgcolor=%22#2A2A2A%22 text=%22eeeeee%22%3E %3Ch3%3E %0D%0A%0D%0ALoading... %3C/h3%3E %3C/body%3E%3C/html%3E"
+       top="0"
+       width="313" />
+    </layout_panel>
+  </layout_stack>
 </panel>