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| 1 /* | |
| 2 * Copyright (c) 2011, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "core/platform/chromium/PopupListBox.h" | |
| 33 | |
| 34 #include "CSSValueKeywords.h" | |
| 35 #include "RuntimeEnabledFeatures.h" | |
| 36 #include "core/platform/PlatformGestureEvent.h" | |
| 37 #include "core/platform/PlatformKeyboardEvent.h" | |
| 38 #include "core/platform/PlatformMouseEvent.h" | |
| 39 #include "core/platform/PlatformScreen.h" | |
| 40 #include "core/platform/PlatformTouchEvent.h" | |
| 41 #include "core/platform/PlatformWheelEvent.h" | |
| 42 #include "core/platform/PopupMenuClient.h" | |
| 43 #include "core/platform/ScrollbarTheme.h" | |
| 44 #include "core/platform/chromium/FramelessScrollViewClient.h" | |
| 45 #include "core/platform/chromium/KeyboardCodes.h" | |
| 46 #include "core/platform/chromium/PopupContainer.h" | |
| 47 #include "core/platform/chromium/PopupMenuChromium.h" | |
| 48 #include "core/platform/graphics/Font.h" | |
| 49 #include "core/platform/graphics/FontSelector.h" | |
| 50 #include "core/platform/graphics/GraphicsContext.h" | |
| 51 #include "core/platform/graphics/IntRect.h" | |
| 52 #include "core/platform/graphics/StringTruncator.h" | |
| 53 #include "core/platform/graphics/TextRun.h" | |
| 54 #include "core/rendering/RenderTheme.h" | |
| 55 #include "wtf/ASCIICType.h" | |
| 56 #include "wtf/CurrentTime.h" | |
| 57 #include <limits> | |
| 58 | |
| 59 namespace WebCore { | |
| 60 | |
| 61 using namespace WTF::Unicode; | |
| 62 | |
| 63 static const int labelToIconPadding = 5; | |
| 64 // Padding height put at the top and bottom of each line. | |
| 65 static const int autofillLinePaddingHeight = 3; | |
| 66 const int PopupListBox::defaultMaxHeight = 500; | |
| 67 static const int maxVisibleRows = 20; | |
| 68 static const int minEndOfLinePadding = 2; | |
| 69 static const int textToLabelPadding = 10; | |
| 70 static const TimeStamp typeAheadTimeoutMs = 1000; | |
| 71 | |
| 72 PopupListBox::PopupListBox(PopupMenuClient* client, const PopupContainerSettings
& settings) | |
| 73 : m_settings(settings) | |
| 74 , m_originalIndex(0) | |
| 75 , m_selectedIndex(0) | |
| 76 , m_acceptedIndexOnAbandon(-1) | |
| 77 , m_visibleRows(0) | |
| 78 , m_baseWidth(0) | |
| 79 , m_maxHeight(defaultMaxHeight) | |
| 80 , m_popupClient(client) | |
| 81 , m_repeatingChar(0) | |
| 82 , m_lastCharTime(0) | |
| 83 , m_maxWindowWidth(std::numeric_limits<int>::max()) | |
| 84 { | |
| 85 setScrollbarModes(ScrollbarAlwaysOff, ScrollbarAlwaysOff); | |
| 86 } | |
| 87 | |
| 88 bool PopupListBox::handleMouseDownEvent(const PlatformMouseEvent& event) | |
| 89 { | |
| 90 Scrollbar* scrollbar = scrollbarAtPoint(event.position()); | |
| 91 if (scrollbar) { | |
| 92 m_capturingScrollbar = scrollbar; | |
| 93 m_capturingScrollbar->mouseDown(event); | |
| 94 return true; | |
| 95 } | |
| 96 | |
| 97 if (!isPointInBounds(event.position())) | |
| 98 abandon(); | |
| 99 | |
| 100 return true; | |
| 101 } | |
| 102 | |
| 103 bool PopupListBox::handleMouseMoveEvent(const PlatformMouseEvent& event) | |
| 104 { | |
| 105 if (m_capturingScrollbar) { | |
| 106 m_capturingScrollbar->mouseMoved(event); | |
| 107 return true; | |
| 108 } | |
| 109 | |
| 110 Scrollbar* scrollbar = scrollbarAtPoint(event.position()); | |
| 111 if (m_lastScrollbarUnderMouse != scrollbar) { | |
| 112 // Send mouse exited to the old scrollbar. | |
| 113 if (m_lastScrollbarUnderMouse) | |
| 114 m_lastScrollbarUnderMouse->mouseExited(); | |
| 115 m_lastScrollbarUnderMouse = scrollbar; | |
| 116 } | |
| 117 | |
| 118 if (scrollbar) { | |
| 119 scrollbar->mouseMoved(event); | |
| 120 return true; | |
| 121 } | |
| 122 | |
| 123 if (!isPointInBounds(event.position())) | |
| 124 return false; | |
| 125 | |
| 126 selectIndex(pointToRowIndex(event.position())); | |
| 127 return true; | |
| 128 } | |
| 129 | |
| 130 bool PopupListBox::handleMouseReleaseEvent(const PlatformMouseEvent& event) | |
| 131 { | |
| 132 if (m_capturingScrollbar) { | |
| 133 m_capturingScrollbar->mouseUp(event); | |
| 134 m_capturingScrollbar = 0; | |
| 135 return true; | |
| 136 } | |
| 137 | |
| 138 if (!isPointInBounds(event.position())) | |
| 139 return true; | |
| 140 | |
| 141 // Need to check before calling acceptIndex(), because m_popupClient might | |
| 142 // be removed in acceptIndex() calling because of event handler. | |
| 143 bool isSelectPopup = m_popupClient->menuStyle().menuType() == PopupMenuStyle
::SelectPopup; | |
| 144 if (acceptIndex(pointToRowIndex(event.position())) && m_focusedNode && isSel
ectPopup) { | |
| 145 m_focusedNode->dispatchMouseEvent(event, eventNames().mouseupEvent); | |
| 146 m_focusedNode->dispatchMouseEvent(event, eventNames().clickEvent); | |
| 147 | |
| 148 // Clear m_focusedNode here, because we cannot clear in hidePopup() | |
| 149 // which is called before dispatchMouseEvent() is called. | |
| 150 m_focusedNode = 0; | |
| 151 } | |
| 152 | |
| 153 return true; | |
| 154 } | |
| 155 | |
| 156 bool PopupListBox::handleWheelEvent(const PlatformWheelEvent& event) | |
| 157 { | |
| 158 if (!isPointInBounds(event.position())) { | |
| 159 abandon(); | |
| 160 return true; | |
| 161 } | |
| 162 | |
| 163 ScrollableArea::handleWheelEvent(event); | |
| 164 return true; | |
| 165 } | |
| 166 | |
| 167 // Should be kept in sync with handleKeyEvent(). | |
| 168 bool PopupListBox::isInterestedInEventForKey(int keyCode) | |
| 169 { | |
| 170 switch (keyCode) { | |
| 171 case VKEY_ESCAPE: | |
| 172 case VKEY_RETURN: | |
| 173 case VKEY_UP: | |
| 174 case VKEY_DOWN: | |
| 175 case VKEY_PRIOR: | |
| 176 case VKEY_NEXT: | |
| 177 case VKEY_HOME: | |
| 178 case VKEY_END: | |
| 179 case VKEY_TAB: | |
| 180 return true; | |
| 181 default: | |
| 182 return false; | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 bool PopupListBox::handleTouchEvent(const PlatformTouchEvent&) | |
| 187 { | |
| 188 return false; | |
| 189 } | |
| 190 | |
| 191 bool PopupListBox::handleGestureEvent(const PlatformGestureEvent&) | |
| 192 { | |
| 193 return false; | |
| 194 } | |
| 195 | |
| 196 static bool isCharacterTypeEvent(const PlatformKeyboardEvent& event) | |
| 197 { | |
| 198 // Check whether the event is a character-typed event or not. | |
| 199 // We use RawKeyDown/Char/KeyUp event scheme on all platforms, | |
| 200 // so PlatformKeyboardEvent::Char (not RawKeyDown) type event | |
| 201 // is considered as character type event. | |
| 202 return event.type() == PlatformEvent::Char; | |
| 203 } | |
| 204 | |
| 205 bool PopupListBox::handleKeyEvent(const PlatformKeyboardEvent& event) | |
| 206 { | |
| 207 if (event.type() == PlatformEvent::KeyUp) | |
| 208 return true; | |
| 209 | |
| 210 if (!numItems() && event.windowsVirtualKeyCode() != VKEY_ESCAPE) | |
| 211 return true; | |
| 212 | |
| 213 switch (event.windowsVirtualKeyCode()) { | |
| 214 case VKEY_ESCAPE: | |
| 215 abandon(); // may delete this | |
| 216 return true; | |
| 217 case VKEY_RETURN: | |
| 218 if (m_selectedIndex == -1) { | |
| 219 hidePopup(); | |
| 220 // Don't eat the enter if nothing is selected. | |
| 221 return false; | |
| 222 } | |
| 223 acceptIndex(m_selectedIndex); // may delete this | |
| 224 return true; | |
| 225 case VKEY_UP: | |
| 226 case VKEY_DOWN: | |
| 227 // We have to forward only shift + up combination to focused node when | |
| 228 // autofill popup. Because all characters from the cursor to the start | |
| 229 // of the text area should selected when you press shift + up arrow. | |
| 230 // shift + down should be the similar way to shift + up. | |
| 231 if (event.modifiers() && m_popupClient->menuStyle().menuType() == PopupM
enuStyle::AutofillPopup) | |
| 232 m_focusedNode->dispatchKeyEvent(event); | |
| 233 else if (event.windowsVirtualKeyCode() == VKEY_UP) | |
| 234 selectPreviousRow(); | |
| 235 else | |
| 236 selectNextRow(); | |
| 237 break; | |
| 238 case VKEY_PRIOR: | |
| 239 adjustSelectedIndex(-m_visibleRows); | |
| 240 break; | |
| 241 case VKEY_NEXT: | |
| 242 adjustSelectedIndex(m_visibleRows); | |
| 243 break; | |
| 244 case VKEY_HOME: | |
| 245 adjustSelectedIndex(-m_selectedIndex); | |
| 246 break; | |
| 247 case VKEY_END: | |
| 248 adjustSelectedIndex(m_items.size()); | |
| 249 break; | |
| 250 default: | |
| 251 if (!event.ctrlKey() && !event.altKey() && !event.metaKey() | |
| 252 && isPrintableChar(event.windowsVirtualKeyCode()) | |
| 253 && isCharacterTypeEvent(event)) | |
| 254 typeAheadFind(event); | |
| 255 break; | |
| 256 } | |
| 257 | |
| 258 if (m_originalIndex != m_selectedIndex) { | |
| 259 // Keyboard events should update the selection immediately (but we don't | |
| 260 // want to fire the onchange event until the popup is closed, to match | |
| 261 // IE). We change the original index so we revert to that when the | |
| 262 // popup is closed. | |
| 263 if (m_settings.acceptOnAbandon) | |
| 264 m_acceptedIndexOnAbandon = m_selectedIndex; | |
| 265 | |
| 266 setOriginalIndex(m_selectedIndex); | |
| 267 if (m_settings.setTextOnIndexChange) | |
| 268 m_popupClient->setTextFromItem(m_selectedIndex); | |
| 269 } | |
| 270 if (event.windowsVirtualKeyCode() == VKEY_TAB) { | |
| 271 // TAB is a special case as it should select the current item if any and | |
| 272 // advance focus. | |
| 273 if (m_selectedIndex >= 0) { | |
| 274 acceptIndex(m_selectedIndex); // May delete us. | |
| 275 // Return false so the TAB key event is propagated to the page. | |
| 276 return false; | |
| 277 } | |
| 278 // Call abandon() so we honor m_acceptedIndexOnAbandon if set. | |
| 279 abandon(); | |
| 280 // Return false so the TAB key event is propagated to the page. | |
| 281 return false; | |
| 282 } | |
| 283 | |
| 284 return true; | |
| 285 } | |
| 286 | |
| 287 HostWindow* PopupListBox::hostWindow() const | |
| 288 { | |
| 289 // Our parent is the root ScrollView, so it is the one that has a | |
| 290 // HostWindow. FrameView::hostWindow() works similarly. | |
| 291 return parent() ? parent()->hostWindow() : 0; | |
| 292 } | |
| 293 | |
| 294 // From HTMLSelectElement.cpp | |
| 295 static String stripLeadingWhiteSpace(const String& string) | |
| 296 { | |
| 297 int length = string.length(); | |
| 298 int i; | |
| 299 for (i = 0; i < length; ++i) | |
| 300 if (string[i] != noBreakSpace | |
| 301 && (string[i] <= 0x7F ? !isASCIISpace(string[i]) : (direction(string
[i]) != WhiteSpaceNeutral))) | |
| 302 break; | |
| 303 | |
| 304 return string.substring(i, length - i); | |
| 305 } | |
| 306 | |
| 307 // From HTMLSelectElement.cpp, with modifications | |
| 308 void PopupListBox::typeAheadFind(const PlatformKeyboardEvent& event) | |
| 309 { | |
| 310 TimeStamp now = static_cast<TimeStamp>(currentTime() * 1000.0f); | |
| 311 TimeStamp delta = now - m_lastCharTime; | |
| 312 | |
| 313 // Reset the time when user types in a character. The time gap between | |
| 314 // last character and the current character is used to indicate whether | |
| 315 // user typed in a string or just a character as the search prefix. | |
| 316 m_lastCharTime = now; | |
| 317 | |
| 318 UChar c = event.windowsVirtualKeyCode(); | |
| 319 | |
| 320 String prefix; | |
| 321 int searchStartOffset = 1; | |
| 322 if (delta > typeAheadTimeoutMs) { | |
| 323 m_typedString = prefix = String(&c, 1); | |
| 324 m_repeatingChar = c; | |
| 325 } else { | |
| 326 m_typedString.append(c); | |
| 327 | |
| 328 if (c == m_repeatingChar) { | |
| 329 // The user is likely trying to cycle through all the items starting | |
| 330 // with this character, so just search on the character. | |
| 331 prefix = String(&c, 1); | |
| 332 } else { | |
| 333 m_repeatingChar = 0; | |
| 334 prefix = m_typedString; | |
| 335 searchStartOffset = 0; | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 // Compute a case-folded copy of the prefix string before beginning the | |
| 340 // search for a matching element. This code uses foldCase to work around the | |
| 341 // fact that String::startWith does not fold non-ASCII characters. This code | |
| 342 // can be changed to use startWith once that is fixed. | |
| 343 String prefixWithCaseFolded(prefix.foldCase()); | |
| 344 int itemCount = numItems(); | |
| 345 int index = (max(0, m_selectedIndex) + searchStartOffset) % itemCount; | |
| 346 for (int i = 0; i < itemCount; i++, index = (index + 1) % itemCount) { | |
| 347 if (!isSelectableItem(index)) | |
| 348 continue; | |
| 349 | |
| 350 if (stripLeadingWhiteSpace(m_items[index]->label).foldCase().startsWith(
prefixWithCaseFolded)) { | |
| 351 selectIndex(index); | |
| 352 return; | |
| 353 } | |
| 354 } | |
| 355 } | |
| 356 | |
| 357 void PopupListBox::paint(GraphicsContext* gc, const IntRect& rect) | |
| 358 { | |
| 359 // Adjust coords for scrolled frame. | |
| 360 IntRect r = intersection(rect, frameRect()); | |
| 361 int tx = x() - scrollX(); | |
| 362 int ty = y() - scrollY(); | |
| 363 | |
| 364 r.move(-tx, -ty); | |
| 365 | |
| 366 // Set clip rect to match revised damage rect. | |
| 367 gc->save(); | |
| 368 gc->translate(static_cast<float>(tx), static_cast<float>(ty)); | |
| 369 gc->clip(r); | |
| 370 | |
| 371 // FIXME: Can we optimize scrolling to not require repainting the entire | |
| 372 // window? Should we? | |
| 373 for (int i = 0; i < numItems(); ++i) | |
| 374 paintRow(gc, r, i); | |
| 375 | |
| 376 // Special case for an empty popup. | |
| 377 if (!numItems()) | |
| 378 gc->fillRect(r, Color::white, ColorSpaceDeviceRGB); | |
| 379 | |
| 380 gc->restore(); | |
| 381 | |
| 382 ScrollView::paint(gc, rect); | |
| 383 } | |
| 384 | |
| 385 static const int separatorPadding = 4; | |
| 386 static const int separatorHeight = 1; | |
| 387 | |
| 388 void PopupListBox::paintRow(GraphicsContext* gc, const IntRect& rect, int rowInd
ex) | |
| 389 { | |
| 390 // This code is based largely on RenderListBox::paint* methods. | |
| 391 | |
| 392 IntRect rowRect = getRowBounds(rowIndex); | |
| 393 if (!rowRect.intersects(rect)) | |
| 394 return; | |
| 395 | |
| 396 PopupMenuStyle style = m_popupClient->itemStyle(rowIndex); | |
| 397 | |
| 398 // Paint background | |
| 399 Color backColor, textColor, labelColor; | |
| 400 if (rowIndex == m_selectedIndex) { | |
| 401 backColor = RenderTheme::defaultTheme()->activeListBoxSelectionBackgroun
dColor(); | |
| 402 textColor = RenderTheme::defaultTheme()->activeListBoxSelectionForegroun
dColor(); | |
| 403 labelColor = textColor; | |
| 404 } else { | |
| 405 backColor = style.backgroundColor(); | |
| 406 textColor = style.foregroundColor(); | |
| 407 | |
| 408 #if OS(LINUX) | |
| 409 // On other platforms, the <option> background color is the same as the | |
| 410 // <select> background color. On Linux, that makes the <option> | |
| 411 // background color very dark, so by default, try to use a lighter | |
| 412 // background color for <option>s. | |
| 413 if (style.backgroundColorType() == PopupMenuStyle::DefaultBackgroundColo
r && RenderTheme::defaultTheme()->systemColor(CSSValueButtonface) == backColor) | |
| 414 backColor = RenderTheme::defaultTheme()->systemColor(CSSValueMenu); | |
| 415 #endif | |
| 416 | |
| 417 // FIXME: for now the label color is hard-coded. It should be added to | |
| 418 // the PopupMenuStyle. | |
| 419 labelColor = Color(115, 115, 115); | |
| 420 } | |
| 421 | |
| 422 // If we have a transparent background, make sure it has a color to blend | |
| 423 // against. | |
| 424 if (backColor.hasAlpha()) | |
| 425 gc->fillRect(rowRect, Color::white, ColorSpaceDeviceRGB); | |
| 426 | |
| 427 gc->fillRect(rowRect, backColor, ColorSpaceDeviceRGB); | |
| 428 | |
| 429 // It doesn't look good but Autofill requires special style for separator. | |
| 430 // Autofill doesn't have padding and #dcdcdc color. | |
| 431 if (m_popupClient->itemIsSeparator(rowIndex)) { | |
| 432 int padding = style.menuType() == PopupMenuStyle::AutofillPopup ? 0 : se
paratorPadding; | |
| 433 IntRect separatorRect( | |
| 434 rowRect.x() + padding, | |
| 435 rowRect.y() + (rowRect.height() - separatorHeight) / 2, | |
| 436 rowRect.width() - 2 * padding, separatorHeight); | |
| 437 gc->fillRect(separatorRect, style.menuType() == PopupMenuStyle::Autofill
Popup ? Color(0xdc, 0xdc, 0xdc) : textColor, ColorSpaceDeviceRGB); | |
| 438 return; | |
| 439 } | |
| 440 | |
| 441 if (!style.isVisible()) | |
| 442 return; | |
| 443 | |
| 444 gc->setFillColor(textColor, ColorSpaceDeviceRGB); | |
| 445 | |
| 446 Font itemFont = getRowFont(rowIndex); | |
| 447 // FIXME: http://crbug.com/19872 We should get the padding of individual opt
ion | |
| 448 // elements. This probably implies changes to PopupMenuClient. | |
| 449 bool rightAligned = m_popupClient->menuStyle().textDirection() == RTL; | |
| 450 int textX = 0; | |
| 451 int maxWidth = 0; | |
| 452 if (rightAligned) | |
| 453 maxWidth = rowRect.width() - max<int>(0, m_popupClient->clientPaddingRig
ht() - m_popupClient->clientInsetRight()); | |
| 454 else { | |
| 455 textX = max<int>(0, m_popupClient->clientPaddingLeft() - m_popupClient->
clientInsetLeft()); | |
| 456 maxWidth = rowRect.width() - textX; | |
| 457 } | |
| 458 // Prepare text to be drawn. | |
| 459 String itemText = m_popupClient->itemText(rowIndex); | |
| 460 String itemLabel = m_popupClient->itemLabel(rowIndex); | |
| 461 String itemIcon = m_popupClient->itemIcon(rowIndex); | |
| 462 if (m_settings.restrictWidthOfListBox) { // Truncate strings to fit in. | |
| 463 // FIXME: We should leftTruncate for the rtl case. | |
| 464 // StringTruncator::leftTruncate would have to be implemented. | |
| 465 String str = StringTruncator::rightTruncate(itemText, maxWidth, itemFont
); | |
| 466 if (str != itemText) { | |
| 467 itemText = str; | |
| 468 // Don't display the label or icon, we already don't have enough | |
| 469 // room for the item text. | |
| 470 itemLabel = ""; | |
| 471 itemIcon = ""; | |
| 472 } else if (!itemLabel.isEmpty()) { | |
| 473 int availableWidth = maxWidth - textToLabelPadding - StringTruncator
::width(itemText, itemFont); | |
| 474 itemLabel = StringTruncator::rightTruncate(itemLabel, availableWidth
, itemFont); | |
| 475 } | |
| 476 } | |
| 477 | |
| 478 // Prepare the directionality to draw text. | |
| 479 TextRun textRun(itemText, 0, 0, TextRun::AllowTrailingExpansion, style.textD
irection(), style.hasTextDirectionOverride()); | |
| 480 // If the text is right-to-left, make it right-aligned by adjusting its | |
| 481 // beginning position. | |
| 482 if (rightAligned) | |
| 483 textX += maxWidth - itemFont.width(textRun); | |
| 484 | |
| 485 // Draw the item text. | |
| 486 int textY = rowRect.y() + itemFont.fontMetrics().ascent() + (rowRect.height(
) - itemFont.fontMetrics().height()) / 2; | |
| 487 TextRunPaintInfo textRunPaintInfo(textRun); | |
| 488 textRunPaintInfo.bounds = rowRect; | |
| 489 gc->drawBidiText(itemFont, textRunPaintInfo, IntPoint(textX, textY)); | |
| 490 | |
| 491 // We are using the left padding as the right padding includes room for the
scroll-bar which | |
| 492 // does not show in this case. | |
| 493 int rightPadding = max<int>(0, m_popupClient->clientPaddingLeft() - m_popupC
lient->clientInsetLeft()); | |
| 494 int remainingWidth = rowRect.width() - rightPadding; | |
| 495 | |
| 496 // Draw the icon if applicable. | |
| 497 RefPtr<Image> image(Image::loadPlatformResource(itemIcon.utf8().data())); | |
| 498 if (image && !image->isNull()) { | |
| 499 IntRect imageRect = image->rect(); | |
| 500 remainingWidth -= (imageRect.width() + labelToIconPadding); | |
| 501 imageRect.setX(rowRect.width() - rightPadding - imageRect.width()); | |
| 502 imageRect.setY(rowRect.y() + (rowRect.height() - imageRect.height()) / 2
); | |
| 503 gc->drawImage(image.get(), ColorSpaceDeviceRGB, imageRect); | |
| 504 } | |
| 505 | |
| 506 // Draw the the label if applicable. | |
| 507 if (itemLabel.isEmpty()) | |
| 508 return; | |
| 509 | |
| 510 // Autofill label is 0.9 smaller than regular font size. | |
| 511 if (style.menuType() == PopupMenuStyle::AutofillPopup) { | |
| 512 itemFont = m_popupClient->itemStyle(rowIndex).font(); | |
| 513 FontDescription d = itemFont.fontDescription(); | |
| 514 d.setComputedSize(d.computedSize() * 0.9); | |
| 515 itemFont = Font(d, itemFont.letterSpacing(), itemFont.wordSpacing()); | |
| 516 itemFont.update(0); | |
| 517 } | |
| 518 | |
| 519 TextRun labelTextRun(itemLabel, 0, 0, TextRun::AllowTrailingExpansion, style
.textDirection(), style.hasTextDirectionOverride()); | |
| 520 if (rightAligned) | |
| 521 textX = max<int>(0, m_popupClient->clientPaddingLeft() - m_popupClient->
clientInsetLeft()); | |
| 522 else | |
| 523 textX = remainingWidth - itemFont.width(labelTextRun); | |
| 524 TextRunPaintInfo labelTextRunPaintInfo(labelTextRun); | |
| 525 labelTextRunPaintInfo.bounds = rowRect; | |
| 526 | |
| 527 gc->setFillColor(labelColor, ColorSpaceDeviceRGB); | |
| 528 gc->drawBidiText(itemFont, labelTextRunPaintInfo, IntPoint(textX, textY)); | |
| 529 } | |
| 530 | |
| 531 Font PopupListBox::getRowFont(int rowIndex) | |
| 532 { | |
| 533 Font itemFont = m_popupClient->itemStyle(rowIndex).font(); | |
| 534 if (m_popupClient->itemIsLabel(rowIndex)) { | |
| 535 // Bold-ify labels (ie, an <optgroup> heading). | |
| 536 FontDescription d = itemFont.fontDescription(); | |
| 537 d.setWeight(FontWeightBold); | |
| 538 Font font(d, itemFont.letterSpacing(), itemFont.wordSpacing()); | |
| 539 font.update(0); | |
| 540 return font; | |
| 541 } | |
| 542 | |
| 543 return itemFont; | |
| 544 } | |
| 545 | |
| 546 void PopupListBox::abandon() | |
| 547 { | |
| 548 RefPtr<PopupListBox> keepAlive(this); | |
| 549 | |
| 550 m_selectedIndex = m_originalIndex; | |
| 551 | |
| 552 hidePopup(); | |
| 553 | |
| 554 if (m_acceptedIndexOnAbandon >= 0) { | |
| 555 if (m_popupClient) | |
| 556 m_popupClient->valueChanged(m_acceptedIndexOnAbandon); | |
| 557 m_acceptedIndexOnAbandon = -1; | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 int PopupListBox::pointToRowIndex(const IntPoint& point) | |
| 562 { | |
| 563 int y = scrollY() + point.y(); | |
| 564 | |
| 565 // FIXME: binary search if perf matters. | |
| 566 for (int i = 0; i < numItems(); ++i) { | |
| 567 if (y < m_items[i]->yOffset) | |
| 568 return i-1; | |
| 569 } | |
| 570 | |
| 571 // Last item? | |
| 572 if (y < contentsHeight()) | |
| 573 return m_items.size()-1; | |
| 574 | |
| 575 return -1; | |
| 576 } | |
| 577 | |
| 578 bool PopupListBox::acceptIndex(int index) | |
| 579 { | |
| 580 // Clear m_acceptedIndexOnAbandon once user accepts the selected index. | |
| 581 if (m_acceptedIndexOnAbandon >= 0) | |
| 582 m_acceptedIndexOnAbandon = -1; | |
| 583 | |
| 584 if (index >= numItems()) | |
| 585 return false; | |
| 586 | |
| 587 if (index < 0) { | |
| 588 if (m_popupClient) { | |
| 589 // Enter pressed with no selection, just close the popup. | |
| 590 hidePopup(); | |
| 591 } | |
| 592 return false; | |
| 593 } | |
| 594 | |
| 595 if (isSelectableItem(index)) { | |
| 596 RefPtr<PopupListBox> keepAlive(this); | |
| 597 | |
| 598 // Hide ourselves first since valueChanged may have numerous side-effect
s. | |
| 599 hidePopup(); | |
| 600 | |
| 601 // Tell the <select> PopupMenuClient what index was selected. | |
| 602 m_popupClient->valueChanged(index); | |
| 603 | |
| 604 return true; | |
| 605 } | |
| 606 | |
| 607 return false; | |
| 608 } | |
| 609 | |
| 610 void PopupListBox::selectIndex(int index) | |
| 611 { | |
| 612 if (index < 0 || index >= numItems()) | |
| 613 return; | |
| 614 | |
| 615 bool isSelectable = isSelectableItem(index); | |
| 616 if (index != m_selectedIndex && isSelectable) { | |
| 617 invalidateRow(m_selectedIndex); | |
| 618 m_selectedIndex = index; | |
| 619 invalidateRow(m_selectedIndex); | |
| 620 | |
| 621 scrollToRevealSelection(); | |
| 622 m_popupClient->selectionChanged(m_selectedIndex); | |
| 623 } else if (!isSelectable) | |
| 624 clearSelection(); | |
| 625 } | |
| 626 | |
| 627 void PopupListBox::setOriginalIndex(int index) | |
| 628 { | |
| 629 m_originalIndex = m_selectedIndex = index; | |
| 630 } | |
| 631 | |
| 632 int PopupListBox::getRowHeight(int index) | |
| 633 { | |
| 634 int minimumHeight = PopupMenuChromium::minimumRowHeight(); | |
| 635 if (m_settings.deviceSupportsTouch) | |
| 636 minimumHeight = max(minimumHeight, PopupMenuChromium::optionRowHeightFor
Touch()); | |
| 637 | |
| 638 if (index < 0 || m_popupClient->itemStyle(index).isDisplayNone()) | |
| 639 return minimumHeight; | |
| 640 | |
| 641 // Separator row height is the same size as itself. | |
| 642 if (m_popupClient->itemIsSeparator(index)) | |
| 643 return max(separatorHeight, minimumHeight); | |
| 644 | |
| 645 String icon = m_popupClient->itemIcon(index); | |
| 646 RefPtr<Image> image(Image::loadPlatformResource(icon.utf8().data())); | |
| 647 | |
| 648 int fontHeight = getRowFont(index).fontMetrics().height(); | |
| 649 int iconHeight = (image && !image->isNull()) ? image->rect().height() : 0; | |
| 650 | |
| 651 int linePaddingHeight = m_popupClient->menuStyle().menuType() == PopupMenuSt
yle::AutofillPopup ? autofillLinePaddingHeight : 0; | |
| 652 int calculatedRowHeight = max(fontHeight, iconHeight) + linePaddingHeight *
2; | |
| 653 return max(calculatedRowHeight, minimumHeight); | |
| 654 } | |
| 655 | |
| 656 IntRect PopupListBox::getRowBounds(int index) | |
| 657 { | |
| 658 if (index < 0) | |
| 659 return IntRect(0, 0, visibleWidth(), getRowHeight(index)); | |
| 660 | |
| 661 return IntRect(0, m_items[index]->yOffset, visibleWidth(), getRowHeight(inde
x)); | |
| 662 } | |
| 663 | |
| 664 void PopupListBox::invalidateRow(int index) | |
| 665 { | |
| 666 if (index < 0) | |
| 667 return; | |
| 668 | |
| 669 // Invalidate in the window contents, as FramelessScrollView::invalidateRect | |
| 670 // paints in the window coordinates. | |
| 671 invalidateRect(contentsToWindow(getRowBounds(index))); | |
| 672 } | |
| 673 | |
| 674 void PopupListBox::scrollToRevealRow(int index) | |
| 675 { | |
| 676 if (index < 0) | |
| 677 return; | |
| 678 | |
| 679 IntRect rowRect = getRowBounds(index); | |
| 680 | |
| 681 if (rowRect.y() < scrollY()) { | |
| 682 // Row is above current scroll position, scroll up. | |
| 683 ScrollView::setScrollPosition(IntPoint(0, rowRect.y())); | |
| 684 } else if (rowRect.maxY() > scrollY() + visibleHeight()) { | |
| 685 // Row is below current scroll position, scroll down. | |
| 686 ScrollView::setScrollPosition(IntPoint(0, rowRect.maxY() - visibleHeight
())); | |
| 687 } | |
| 688 } | |
| 689 | |
| 690 bool PopupListBox::isSelectableItem(int index) | |
| 691 { | |
| 692 ASSERT(index >= 0 && index < numItems()); | |
| 693 return m_items[index]->type == PopupItem::TypeOption && m_popupClient->itemI
sEnabled(index); | |
| 694 } | |
| 695 | |
| 696 void PopupListBox::clearSelection() | |
| 697 { | |
| 698 if (m_selectedIndex != -1) { | |
| 699 invalidateRow(m_selectedIndex); | |
| 700 m_selectedIndex = -1; | |
| 701 m_popupClient->selectionCleared(); | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 void PopupListBox::selectNextRow() | |
| 706 { | |
| 707 if (!m_settings.loopSelectionNavigation || m_selectedIndex != numItems() - 1
) { | |
| 708 adjustSelectedIndex(1); | |
| 709 return; | |
| 710 } | |
| 711 | |
| 712 // We are moving past the last item, no row should be selected. | |
| 713 clearSelection(); | |
| 714 } | |
| 715 | |
| 716 void PopupListBox::selectPreviousRow() | |
| 717 { | |
| 718 if (!m_settings.loopSelectionNavigation || m_selectedIndex > 0) { | |
| 719 adjustSelectedIndex(-1); | |
| 720 return; | |
| 721 } | |
| 722 | |
| 723 if (!m_selectedIndex) { | |
| 724 // We are moving past the first item, clear the selection. | |
| 725 clearSelection(); | |
| 726 return; | |
| 727 } | |
| 728 | |
| 729 // No row is selected, jump to the last item. | |
| 730 selectIndex(numItems() - 1); | |
| 731 scrollToRevealSelection(); | |
| 732 } | |
| 733 | |
| 734 void PopupListBox::adjustSelectedIndex(int delta) | |
| 735 { | |
| 736 int targetIndex = m_selectedIndex + delta; | |
| 737 targetIndex = std::min(std::max(targetIndex, 0), numItems() - 1); | |
| 738 if (!isSelectableItem(targetIndex)) { | |
| 739 // We didn't land on an option. Try to find one. | |
| 740 // We try to select the closest index to target, prioritizing any in | |
| 741 // the range [current, target]. | |
| 742 | |
| 743 int dir = delta > 0 ? 1 : -1; | |
| 744 int testIndex = m_selectedIndex; | |
| 745 int bestIndex = m_selectedIndex; | |
| 746 bool passedTarget = false; | |
| 747 while (testIndex >= 0 && testIndex < numItems()) { | |
| 748 if (isSelectableItem(testIndex)) | |
| 749 bestIndex = testIndex; | |
| 750 if (testIndex == targetIndex) | |
| 751 passedTarget = true; | |
| 752 if (passedTarget && bestIndex != m_selectedIndex) | |
| 753 break; | |
| 754 | |
| 755 testIndex += dir; | |
| 756 } | |
| 757 | |
| 758 // Pick the best index, which may mean we don't change. | |
| 759 targetIndex = bestIndex; | |
| 760 } | |
| 761 | |
| 762 // Select the new index, and ensure its visible. We do this regardless of | |
| 763 // whether the selection changed to ensure keyboard events always bring the | |
| 764 // selection into view. | |
| 765 selectIndex(targetIndex); | |
| 766 scrollToRevealSelection(); | |
| 767 } | |
| 768 | |
| 769 void PopupListBox::hidePopup() | |
| 770 { | |
| 771 if (parent()) { | |
| 772 PopupContainer* container = static_cast<PopupContainer*>(parent()); | |
| 773 if (container->client()) | |
| 774 container->client()->popupClosed(container); | |
| 775 container->notifyPopupHidden(); | |
| 776 } | |
| 777 | |
| 778 if (m_popupClient) | |
| 779 m_popupClient->popupDidHide(); | |
| 780 } | |
| 781 | |
| 782 void PopupListBox::updateFromElement() | |
| 783 { | |
| 784 clear(); | |
| 785 | |
| 786 int size = m_popupClient->listSize(); | |
| 787 for (int i = 0; i < size; ++i) { | |
| 788 PopupItem::Type type; | |
| 789 if (m_popupClient->itemIsSeparator(i)) | |
| 790 type = PopupItem::TypeSeparator; | |
| 791 else if (m_popupClient->itemIsLabel(i)) | |
| 792 type = PopupItem::TypeGroup; | |
| 793 else | |
| 794 type = PopupItem::TypeOption; | |
| 795 m_items.append(new PopupItem(m_popupClient->itemText(i), type)); | |
| 796 m_items[i]->enabled = isSelectableItem(i); | |
| 797 PopupMenuStyle style = m_popupClient->itemStyle(i); | |
| 798 m_items[i]->textDirection = style.textDirection(); | |
| 799 m_items[i]->hasTextDirectionOverride = style.hasTextDirectionOverride(); | |
| 800 } | |
| 801 | |
| 802 m_selectedIndex = m_popupClient->selectedIndex(); | |
| 803 setOriginalIndex(m_selectedIndex); | |
| 804 | |
| 805 layout(); | |
| 806 } | |
| 807 | |
| 808 void PopupListBox::setMaxWidthAndLayout(int maxWidth) | |
| 809 { | |
| 810 m_maxWindowWidth = maxWidth; | |
| 811 layout(); | |
| 812 } | |
| 813 | |
| 814 void PopupListBox::layout() | |
| 815 { | |
| 816 bool isRightAligned = m_popupClient->menuStyle().textDirection() == RTL; | |
| 817 | |
| 818 // Size our child items. | |
| 819 int baseWidth = 0; | |
| 820 int paddingWidth = 0; | |
| 821 int lineEndPaddingWidth = 0; | |
| 822 int y = 0; | |
| 823 for (int i = 0; i < numItems(); ++i) { | |
| 824 // Place the item vertically. | |
| 825 m_items[i]->yOffset = y; | |
| 826 if (m_popupClient->itemStyle(i).isDisplayNone()) | |
| 827 continue; | |
| 828 y += getRowHeight(i); | |
| 829 | |
| 830 // Ensure the popup is wide enough to fit this item. | |
| 831 Font itemFont = getRowFont(i); | |
| 832 String text = m_popupClient->itemText(i); | |
| 833 String label = m_popupClient->itemLabel(i); | |
| 834 String icon = m_popupClient->itemIcon(i); | |
| 835 RefPtr<Image> iconImage(Image::loadPlatformResource(icon.utf8().data()))
; | |
| 836 int width = 0; | |
| 837 if (!text.isEmpty()) | |
| 838 width = itemFont.width(TextRun(text)); | |
| 839 if (!label.isEmpty()) { | |
| 840 if (width > 0) | |
| 841 width += textToLabelPadding; | |
| 842 width += itemFont.width(TextRun(label)); | |
| 843 } | |
| 844 if (iconImage && !iconImage->isNull()) { | |
| 845 if (width > 0) | |
| 846 width += labelToIconPadding; | |
| 847 width += iconImage->rect().width(); | |
| 848 } | |
| 849 | |
| 850 baseWidth = max(baseWidth, width); | |
| 851 // FIXME: http://b/1210481 We should get the padding of individual | |
| 852 // option elements. | |
| 853 paddingWidth = max<int>(paddingWidth, | |
| 854 m_popupClient->clientPaddingLeft() + m_popupClient->clientPaddingRig
ht()); | |
| 855 lineEndPaddingWidth = max<int>(lineEndPaddingWidth, | |
| 856 isRightAligned ? m_popupClient->clientPaddingLeft() : m_popupClient-
>clientPaddingRight()); | |
| 857 } | |
| 858 | |
| 859 // Calculate scroll bar width. | |
| 860 int windowHeight = 0; | |
| 861 m_visibleRows = std::min(numItems(), maxVisibleRows); | |
| 862 | |
| 863 for (int i = 0; i < m_visibleRows; ++i) { | |
| 864 int rowHeight = getRowHeight(i); | |
| 865 | |
| 866 // Only clip the window height for non-Mac platforms. | |
| 867 if (windowHeight + rowHeight > m_maxHeight) { | |
| 868 m_visibleRows = i; | |
| 869 break; | |
| 870 } | |
| 871 | |
| 872 windowHeight += rowHeight; | |
| 873 } | |
| 874 | |
| 875 // Set our widget and scrollable contents sizes. | |
| 876 int scrollbarWidth = 0; | |
| 877 if (m_visibleRows < numItems()) { | |
| 878 scrollbarWidth = ScrollbarTheme::theme()->scrollbarThickness(); | |
| 879 | |
| 880 // Use minEndOfLinePadding when there is a scrollbar so that we use | |
| 881 // as much as (lineEndPaddingWidth - minEndOfLinePadding) padding | |
| 882 // space for scrollbar and allow user to use CSS padding to make the | |
| 883 // popup listbox align with the select element. | |
| 884 paddingWidth = paddingWidth - lineEndPaddingWidth + minEndOfLinePadding; | |
| 885 } | |
| 886 | |
| 887 int windowWidth; | |
| 888 int contentWidth; | |
| 889 if (m_settings.restrictWidthOfListBox) { | |
| 890 windowWidth = m_baseWidth; | |
| 891 contentWidth = m_baseWidth - scrollbarWidth; | |
| 892 } else { | |
| 893 windowWidth = baseWidth + scrollbarWidth + paddingWidth; | |
| 894 if (windowWidth > m_maxWindowWidth) { | |
| 895 // windowWidth exceeds m_maxWindowWidth, so we have to clip. | |
| 896 windowWidth = m_maxWindowWidth; | |
| 897 baseWidth = windowWidth - scrollbarWidth - paddingWidth; | |
| 898 m_baseWidth = baseWidth; | |
| 899 } | |
| 900 contentWidth = windowWidth - scrollbarWidth; | |
| 901 | |
| 902 if (windowWidth < m_baseWidth) { | |
| 903 windowWidth = m_baseWidth; | |
| 904 contentWidth = m_baseWidth - scrollbarWidth; | |
| 905 } else | |
| 906 m_baseWidth = baseWidth; | |
| 907 } | |
| 908 | |
| 909 resize(windowWidth, windowHeight); | |
| 910 setContentsSize(IntSize(contentWidth, getRowBounds(numItems() - 1).maxY())); | |
| 911 | |
| 912 if (hostWindow()) | |
| 913 scrollToRevealSelection(); | |
| 914 | |
| 915 invalidate(); | |
| 916 } | |
| 917 | |
| 918 void PopupListBox::clear() | |
| 919 { | |
| 920 for (Vector<PopupItem*>::iterator it = m_items.begin(); it != m_items.end();
++it) | |
| 921 delete *it; | |
| 922 m_items.clear(); | |
| 923 } | |
| 924 | |
| 925 bool PopupListBox::isPointInBounds(const IntPoint& point) | |
| 926 { | |
| 927 return numItems() && IntRect(0, 0, width(), height()).contains(point); | |
| 928 } | |
| 929 | |
| 930 int PopupListBox::popupContentHeight() const | |
| 931 { | |
| 932 return height(); | |
| 933 } | |
| 934 | |
| 935 } // namespace WebCore | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 16077002:
Move popup menu code from core/platform to WebKit/chromium/src. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk