Implement <select> Popup Menu using PagePopup

Source/web/PopupContainerTest.cpp

-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "web/PopupContainer.h"
-
-#include <gtest/gtest.h>
-
-using namespace blink;
-
-class MockPopupContent : public PopupContent {
-public:
-    virtual void setMaxHeight(int max) override { maxHeight = max; }
-    virtual int popupContentHeight() const override { return height; }
-    virtual ~MockPopupContent() { }
-
-    virtual void layout() override
-    {
-        layoutCount++;
-        width = std::min(maxWidth, width);
-        height = std::min(maxHeight, height);
-        height -= height % 16;
-    }
-
-    virtual void setMaxWidthAndLayout(int max) override
-    {
-        maxWidth = max;
-        layout();
-    }
-
-    MockPopupContent(const IntSize& widgetSize)
-        : width(widgetSize.width() - borderSize * 2)
-        , height(widgetSize.height() - borderSize * 2)
-        , maxWidth(width)
-        , maxHeight(height)
-        , layoutCount(0)
-    {
-    }
-
-    int width;
-    int height;
-    int maxWidth;
-    int maxHeight;
-    unsigned layoutCount;
-
-    static const int borderSize = 1; // Should match to kBorderSize in PopupContainer.cpp.
-};
-
-const int screenMaxX = 1024;
-const int screenMaxY = 768;
-const int targetControlWidth = 130;
-
-static IntRect calculatePositionWithTransformAndRTL(const IntRect& initialRect, const IntSize& transformOffset, int verticalOffset, PopupContent* content)
-{
-    const bool isRTL = true;
-    const int targetControlHeight = 20;
-    const FloatRect screenRect(0, 0, screenMaxX, screenMaxY);
-    const FloatRect windowRect(0, 0, 512, 512);
-    int rtlOffset = targetControlWidth - initialRect.width();
-    bool needToResizeView = false;
-    return PopupContainer::layoutAndCalculateWidgetRectInternal(initialRect, targetControlHeight, windowRect, screenRect, !isRTL, rtlOffset, verticalOffset, transformOffset, content, needToResizeView);
-}
-
-static IntRect calculatePosition(const IntRect& initialRect, PopupContent* content, FloatRect windowRect = FloatRect(0, 0, 512, 512), bool isRTL = true)
-{
-    const int targetControlHeight = 20;
-    const FloatRect screenRect(0, 0, screenMaxX, screenMaxY);
-    int rtlOffset = (targetControlWidth - initialRect.width()) * (isRTL ? 1 : -1);
-    bool needToResizeView = false;
-    return PopupContainer::layoutAndCalculateWidgetRectInternal(initialRect, targetControlHeight, windowRect, screenRect, !isRTL, rtlOffset, 0, IntSize(), content, needToResizeView);
-}
-
-TEST(PopupContainerTest, PopupPosition)

[tkent, 2014/12/15 02:07:00]

I wonder if we have enough tests for PagePopup positioning code.

[keishi, 2014/12/15 08:29:42]

I added popup-menu-position.html to test some of this. I'll try to add some more
test cases.

-{
-    // Suppose that initialRect.location is the bottom-left corner of the target
-    // control such as <select>.
-
-    {
-        // If initialRect is in the screen, nothing should happen.
-        IntRect initialRect(100, 100, 256, 258);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(initialRect, resultRect);
-        EXPECT_EQ(0u, content.layoutCount);
-    }
-
-    {
-        // If the left edge of the control is projecting from the screen, making
-        // the widget aligned to the right edge of the control.
-        IntRect initialRect(-10, 100, 100, 258);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(20, 100, 100, 258), resultRect);
-    }
-
-    {
-        // Made the widget aligned to the right edge. But it's still projecting
-        // from the screen.
-        IntRect initialRect(-10, 100, targetControlWidth, 258);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(0, 100, 120, 258), resultRect);
-        EXPECT_EQ(118, content.width);
-        EXPECT_TRUE(content.layoutCount);
-    }
-
-    {
-        // If the right edge of the control is projecting from the screen,
-        // shrink the width of the widget.
-        IntRect initialRect(screenMaxX - 100, 100, targetControlWidth, 258);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(screenMaxX - 100, 100, 100, 258), resultRect);
-        EXPECT_EQ(98, content.width);
-        EXPECT_TRUE(content.layoutCount);
-    }
-
-    {
-        // If there is no enough room below, move the widget upwards.
-        IntRect initialRect(100, 700, targetControlWidth, 258);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(100, 422, targetControlWidth, 258), resultRect);
-        EXPECT_EQ(0u, content.layoutCount);
-    }
-
-    {
-        // There is no enough room below and above, and the below space is larger.
-        IntRect initialRect(100, 300, targetControlWidth, 514);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(100, 300, targetControlWidth, 466), resultRect);
-        EXPECT_TRUE(content.layoutCount);
-        EXPECT_EQ(464, content.height);
-    }
-
-    {
-        // There is no enough room below and above, and the above space is larger.
-        IntRect initialRect(100, 400, targetControlWidth, 514);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content);
-        EXPECT_EQ(IntRect(100, 10, targetControlWidth, 370), resultRect);
-        EXPECT_TRUE(content.layoutCount);
-        EXPECT_EQ(368, content.height);
-    }
-
-    {
-        // There is not enough room to the right, so open the popup menu to the left.
-        IntRect initialRect(screenMaxX - targetControlWidth - 6, 100, targetControlWidth * 2, 100);
-        MockPopupContent content(initialRect.size());
-        IntRect resultRect = calculatePosition(initialRect, &content, FloatRect(0, 0, screenMaxX, screenMaxY), false);
-        EXPECT_EQ(IntRect(758, 100, 260, 100), resultRect);
-    }
-
-    {
-        // Test for transform:rotate(53deg).
-        IntRect initialRect(100, 700, targetControlWidth, 258);
-        MockPopupContent content(initialRect.size());
-        IntSize transformOffset(-4, -8);
-        IntRect resultRect = calculatePositionWithTransformAndRTL(initialRect, transformOffset, -104, &content);
-        EXPECT_EQ(IntRect(104, 430, targetControlWidth, 258), resultRect);
-        EXPECT_EQ(0u, content.layoutCount);
-    }
-
-    {
-        // Test for transform:rotate(-53deg).
-        IntRect initialRect(100, 700, targetControlWidth, 258);
-        MockPopupContent content(initialRect.size());
-        IntSize transformOffset(4, -8);
-        IntRect resultRect = calculatePositionWithTransformAndRTL(initialRect, transformOffset, 104, &content);
-        EXPECT_EQ(IntRect(96, 430, targetControlWidth, 258), resultRect);
-        EXPECT_EQ(0u, content.layoutCount);
-    }
-}