Implement topic highlighting after e.g. F1.

Task-number: QTCREATORBUG-1765 Reviewed-by: ck

Implement topic highlighting after e.g. F1.
Task-number: QTCREATORBUG-1765 Reviewed-by: ck
6a98c171 · kh1 · d9728437 · 6a98c171 · 6a98c171
Commit 6a98c171 authored 14 years ago by kh1
--- a/src/plugins/help/helpplugin.cpp
+++ b/src/plugins/help/helpplugin.cpp
@@ -80,6 +80,12 @@

 #include <QtHelp/QHelpEngine>

+#if !defined(QT_NO_WEBKIT)
+#include <QtWebKit/QWebElement>
+#include <QtWebKit/QWebElementCollection>
+#include <QtWebKit/QWebFrame>
+#endif
+
 using namespace Core::Constants;
 using namespace Help::Internal;

@@ -691,13 +697,11 @@ void HelpPlugin::activateContext()
    } else if (m_core->modeManager()->currentMode() == m_mode)
        return;

-    QString id;
-    QMap<QString, QUrl> links;
-
    // Find out what to show
+    QMap<QString, QUrl> links;
    if (IContext *context = m_core->currentContextObject()) {
-        id = context->contextHelpId();
-        links = Core::HelpManager::instance()->linksForIdentifier(id);
+        m_idFromContext = context->contextHelpId();
+        links = Core::HelpManager::instance()->linksForIdentifier(m_idFromContext);
    }

    if (HelpViewer* viewer = viewerForContextMode()) {
@@ -705,16 +709,24 @@ void HelpPlugin::activateContext()
            // No link found or no context object
            viewer->setHtml(tr("<html><head><title>No Documentation</title>"
                "</head><body><br/><center><b>%1</b><br/>No documentation "
-                "available.</center></body></html>").arg(id));
+                "available.</center></body></html>").arg(m_idFromContext));
            viewer->setSource(QUrl());
        } else {
            const QUrl &source = *links.begin();
-            if (viewer->source() != source)
+            const QUrl &oldSource = viewer->source();
+            if (source != oldSource) {
+                viewer->stop();
                viewer->setSource(source);
+            }
            viewer->setFocus();
+            connect(viewer, SIGNAL(loadFinished(bool)), this,
+                SLOT(highlightSearchTerms()));
+
+            if (source.toString().remove(source.fragment())
+                == oldSource.toString().remove(oldSource.fragment())) {
+                    highlightSearchTerms();
+            }
        }
-        if (viewer != m_helpViewerForSideBar)
-            activateHelpMode();
    }
 }

@@ -822,6 +834,45 @@ void HelpPlugin::addBookmark()
    manager->showBookmarkDialog(m_centralWidget, viewer->title(), url);
 }

+void HelpPlugin::highlightSearchTerms()
+{
+    if (HelpViewer* viewer = viewerForContextMode()) {
+        disconnect(viewer, SIGNAL(loadFinished(bool)), this,
+            SLOT(highlightSearchTerms()));
+
+#if !defined(QT_NO_WEBKIT)
+        const QString &attrValue = m_idFromContext.mid(m_idFromContext
+            .lastIndexOf(QChar(':')) + 1);
+        if (attrValue.isEmpty())
+            return;
+
+        const QWebElement &document = viewer->page()->mainFrame()->documentElement();
+        const QWebElementCollection &collection = document.findAll(QLatin1String("h3.fn a"));
+
+        const QLatin1String property("background-color");
+        foreach (const QWebElement &element, collection) {
+            const QString &name = element.attribute(QLatin1String("name"));
+            if (name.isEmpty())
+                continue;
+
+            if (m_oldAttrValue == name) {
+                QWebElement parent = element.parent();
+                parent.setStyleProperty(property, m_styleProperty);
+            }
+
+            if (attrValue == name) {
+                QWebElement parent = element.parent();
+                m_styleProperty = parent.styleProperty(property,
+                    QWebElement::InlineStyle);
+                parent.setStyleProperty(property, QLatin1String("yellow"));
+            }
+        }
+        m_oldAttrValue = attrValue;
+#endif
+        viewer->findText(m_idFromContext, 0, false, true);
+    }
+}
+
 void HelpPlugin::handleHelpRequest(const QUrl &url)
 {
    if (HelpViewer::launchWithExternalApp(url))

--- a/src/plugins/help/helpplugin.h
+++ b/src/plugins/help/helpplugin.h
@@ -98,6 +98,7 @@ private slots:
    void updateCloseButton();
    void setupHelpEngineIfNeeded();

+    void highlightSearchTerms();
    void handleHelpRequest(const QUrl &url);

 private:
@@ -134,6 +135,10 @@ private:
    Core::MiniSplitter *m_splitter;

    QToolButton *m_closeButton;
+
+    QString m_oldAttrValue;
+    QString m_styleProperty;
+    QString m_idFromContext;
 };

 } // namespace Internal