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      1 #include "config.h"
      2 
      3 #include "core/frame/FrameView.h"
      4 #include "core/rendering/RenderView.h"
      5 #include "public/platform/Platform.h"
      6 #include "public/platform/WebUnitTestSupport.h"
      7 #include "public/web/WebFrame.h"
      8 #include "public/web/WebFrameClient.h"
      9 #include "public/web/WebHistoryItem.h"
     10 #include "public/web/WebInputEvent.h"
     11 #include "public/web/WebScriptSource.h"
     12 #include "public/web/WebSettings.h"
     13 #include "public/web/WebView.h"
     14 #include "web/WebLocalFrameImpl.h"
     15 #include "web/WebViewImpl.h"
     16 #include "web/tests/FrameTestHelpers.h"
     17 #include "web/tests/URLTestHelpers.h"
     18 #include <gtest/gtest.h>
     19 
     20 using namespace WebCore;
     21 using namespace blink;
     22 
     23 namespace {
     24 
     25 class MockWebFrameClient : public WebFrameClient {
     26 };
     27 
     28 class ProgrammaticScrollTest : public testing::Test {
     29 public:
     30     ProgrammaticScrollTest()
     31         : m_baseURL("http://www.test.com/")
     32     {
     33     }
     34 
     35     virtual void TearDown()
     36     {
     37         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
     38     }
     39 
     40 protected:
     41 
     42     void registerMockedHttpURLLoad(const std::string& fileName)
     43     {
     44         URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8(fileName.c_str()));
     45     }
     46 
     47     std::string m_baseURL;
     48     MockWebFrameClient m_mockWebFrameClient;
     49 };
     50 
     51 TEST_F(ProgrammaticScrollTest, RestoreScrollPositionAndViewStateWithScale)
     52 {
     53     registerMockedHttpURLLoad("long_scroll.html");
     54 
     55     FrameTestHelpers::WebViewHelper webViewHelper;
     56     WebView* webView = webViewHelper.initializeAndLoad(m_baseURL + "long_scroll.html", true, 0, 0);
     57     webView->resize(WebSize(1000, 1000));
     58     webView->layout();
     59 
     60     WebViewImpl* webViewImpl = toWebViewImpl(webView);
     61     LocalFrame* frame = webViewImpl->mainFrameImpl()->frame();
     62     frame->loader().setLoadType(FrameLoadTypeBackForward);
     63 
     64     webViewImpl->setPageScaleFactor(3.0f);
     65     webViewImpl->setMainFrameScrollOffset(WebPoint(0, 500));
     66     frame->view()->setWasScrolledByUser(false);
     67     frame->loader().currentItem()->setPageScaleFactor(2);
     68     frame->loader().currentItem()->setScrollPoint(WebPoint(0, 200));
     69 
     70     // Flip back the wasScrolledByUser flag which was set to true by setPageScaleFactor
     71     // because otherwise FrameLoader::restoreScrollPositionAndViewState does nothing.
     72     frame->view()->setWasScrolledByUser(false);
     73     frame->loader().restoreScrollPositionAndViewState();
     74 
     75     // Expect that both scroll and scale were restored, and that it was not a programmatic scroll.
     76     EXPECT_EQ(2.0f, webViewImpl->pageScaleFactor());
     77     EXPECT_EQ(200, webViewImpl->mainFrameImpl()->scrollOffset().height);
     78     EXPECT_TRUE(frame->view()->wasScrolledByUser());
     79 }
     80 
     81 TEST_F(ProgrammaticScrollTest, RestoreScrollPositionAndViewStateWithoutScale)
     82 {
     83     registerMockedHttpURLLoad("long_scroll.html");
     84 
     85     FrameTestHelpers::WebViewHelper webViewHelper;
     86     WebView* webView = webViewHelper.initializeAndLoad(m_baseURL + "long_scroll.html", true, 0, 0);
     87     webView->resize(WebSize(1000, 1000));
     88     webView->layout();
     89 
     90     WebViewImpl* webViewImpl = toWebViewImpl(webView);
     91     LocalFrame* frame = webViewImpl->mainFrameImpl()->frame();
     92     frame->loader().setLoadType(FrameLoadTypeBackForward);
     93 
     94     webViewImpl->setPageScaleFactor(3.0f);
     95     webViewImpl->setMainFrameScrollOffset(WebPoint(0, 500));
     96     frame->view()->setWasScrolledByUser(false);
     97     frame->loader().currentItem()->setPageScaleFactor(0);
     98     frame->loader().currentItem()->setScrollPoint(WebPoint(0, 400));
     99 
    100     // FrameLoader::restoreScrollPositionAndViewState flows differently if scale is zero.
    101     frame->loader().restoreScrollPositionAndViewState();
    102 
    103     // Expect that only the scroll position was restored, and that it was not a programmatic scroll.
    104     EXPECT_EQ(3.0f, webViewImpl->pageScaleFactor());
    105     EXPECT_EQ(400, webViewImpl->mainFrameImpl()->scrollOffset().height);
    106     EXPECT_TRUE(frame->view()->wasScrolledByUser());
    107 }
    108 
    109 }
    110