Add help search commands (?text).

Example:
    ?warps

It will open help page about warps.

5 files changed, 92 insertions, 6 deletions

diff --git a/src/gui/didyouknowwindow.cpp b/src/gui/didyouknowwindow.cpp
index 50e0f0188..d17d4f58a 100644
--- a/src/gui/didyouknowwindow.cpp
+++ b/src/gui/didyouknowwindow.cpp
@@ -46,7 +46,7 @@
 #include "debug.h"
 
 static const int minTip = 1;
-static const int maxTip = 14;
+static const int maxTip = 15;
 
 DidYouKnowWindow::DidYouKnowWindow():
     Window(_("Did You Know?"), false, nullptr, "didyouknow.xml")
diff --git a/src/gui/helpwindow.cpp b/src/gui/helpwindow.cpp
index 82a70bca9..c2b0d873f 100644
--- a/src/gui/helpwindow.cpp
+++ b/src/gui/helpwindow.cpp
@@ -80,6 +80,7 @@ HelpWindow::HelpWindow():
     layout.setRowHeight(0, Layout::AUTO_SET);
 
     loadWindowState();
+    loadTags();
 }
 
 void HelpWindow::action(const gcn::ActionEvent &event)
@@ -120,3 +121,56 @@ void HelpWindow::loadFile(const std::string &file)
     for (unsigned int i = 0; i < lines.size(); ++i)
         mBrowserBox->addRow(lines[i]);
 }
+
+void HelpWindow::loadTags()
+{
+    std::string helpPath = branding.getStringValue("helpPath");
+    if (helpPath.empty())
+        helpPath = paths.getStringValue("help");
+    StringVect lines;
+    ResourceManager::loadTextFile(helpPath + "tags.idx", lines);
+    for (StringVectCIter it = lines.begin(), it_end = lines.end();
+         it != it_end; ++ it)
+    {
+        const std::string &str = *it;
+        size_t idx = str.find('|');
+        if (idx != std::string::npos)
+            mTagFileMap[str.substr(idx + 1)].insert(str.substr(0, idx));
+    }
+}
+
+void HelpWindow::search(const std::string &text0)
+{
+    std::string text = text0;
+    toLower(text);
+    if (mTagFileMap.find(text) == mTagFileMap.end())
+    {
+        loadHelp("searchnotfound");
+    }
+    else
+    {
+        const HelpNames &names = mTagFileMap[text];
+        if (names.size() == 1)
+        {
+            loadHelp(*names.begin());
+        }
+        else
+        {
+            if (!translator)
+                return;
+            mBrowserBox->clearRows();
+            loadFile("header");
+            loadFile("searchmany");
+            for (HelpNamesCIter it = names.begin(), it_end = names.end();
+                 it != it_end; ++ it)
+            {
+                const char *str = (*it).c_str();
+                mBrowserBox->addRow(strprintf(" -> @@%s|%s@@", str,
+                    translator->getChar(str)));
+            }
+            loadFile("footer");
+            mScrollArea->setVerticalScrollAmount(0);
+            setVisible(true);
+        }
+    }
+}
diff --git a/src/gui/helpwindow.h b/src/gui/helpwindow.h
index 675b5c35a..9d89c03c4 100644
--- a/src/gui/helpwindow.h
+++ b/src/gui/helpwindow.h
@@ -30,6 +30,9 @@
 
 #include "localconsts.h"
 
+#include <map>
+#include <set>
+
 class BrowserBox;
 class LinkHandler;
 
@@ -38,6 +41,10 @@ namespace gcn
     class ScrollArea;
 }
 
+typedef std::set<std::string> HelpNames;
+typedef HelpNames::const_iterator HelpNamesCIter;
+typedef std::map<std::string, HelpNames> HelpTagsMap;
+
 /**
  * The help dialog.
  */
@@ -66,11 +73,19 @@ class HelpWindow : public Window, public LinkHandler,
          */
         void loadHelp(const std::string &helpFile);
 
+        /**
+         * Seach for given text in tags.
+         */
+        void search(const std::string &text);
+
     private:
+        void loadTags();
+
         void loadFile(const std::string &file);
 
         BrowserBox *mBrowserBox;
         gcn::ScrollArea *mScrollArea;
+        HelpTagsMap mTagFileMap;
 };
 
 extern HelpWindow *helpWindow;
diff --git a/src/gui/widgets/chattab.cpp b/src/gui/widgets/chattab.cpp
index 5f97cd613..fa61f0dcd 100644
--- a/src/gui/widgets/chattab.cpp
+++ b/src/gui/widgets/chattab.cpp
@@ -30,6 +30,8 @@
 #include "logger.h"
 #include "sound.h"
 
+#include "gui/helpwindow.h"
+
 #include "gui/widgets/browserbox.h"
 #include "gui/widgets/scrollarea.h"
 #include "gui/widgets/itemlinkhandler.h"
@@ -379,11 +381,18 @@ void ChatTab::chatInput(const std::string &message)
     if (commandHandler)
         commandHandler->replaceVars(msg);
 
-    // Prepare ordinary message
-    if (msg[0] != '/')
-        handleInput(msg);
-    else
-        handleCommand(std::string(msg, 1));
+    switch (msg[0])
+    {
+        case '/':
+            handleCommand(std::string(msg, 1));
+            break;
+        case '?':
+            handleHelp(std::string(msg, 1));
+            break;
+        default:
+            handleInput(msg);
+            break;
+    }
 }
 
 void ChatTab::scroll(int amount)
@@ -414,6 +423,12 @@ void ChatTab::handleCommand(const std::string &msg)
         commandHandler->handleCommands(msg, this);
 }
 
+void ChatTab::handleHelp(const std::string &msg)
+{
+    if (commandHandler)
+        helpWindow->search(msg);
+}
+
 bool ChatTab::handleCommands(const std::string &type, const std::string &args)
 {
     // need split to commands and call each
diff --git a/src/gui/widgets/chattab.h b/src/gui/widgets/chattab.h
index 455152693..e1e2c211d 100644
--- a/src/gui/widgets/chattab.h
+++ b/src/gui/widgets/chattab.h
@@ -177,6 +177,8 @@ class ChatTab : public Tab
 
         virtual void handleCommand(const std::string &msg);
 
+        virtual void handleHelp(const std::string &msg);
+
         virtual void getAutoCompleteList(StringVect&) const
         {}