| /* This file is part of the KDE project |
| * |
| * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org> |
| * 1999 Lars Knoll <knoll@kde.org> |
| * 1999 Antti Koivisto <koivisto@kde.org> |
| * 2000 Dirk Mueller <mueller@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| #include "config.h" |
| #include "FrameView.h" |
| |
| #include "CachedImage.h" |
| #include "Cursor.h" |
| #include "EventNames.h" |
| #include "Frame.h" |
| #include "HTMLInputElement.h" |
| #include "Image.h" |
| #include "AccessibilityObjectCache.h" |
| #include "PlatformKeyboardEvent.h" |
| #include "PlatformMouseEvent.h" |
| #include "MouseEventWithHitTestResults.h" |
| #include "RenderText.h" |
| #include "SelectionController.h" |
| #include "PlatformWheelEvent.h" |
| #include "cssstyleselector.h" |
| #include "dom2_eventsimpl.h" |
| #include "HTMLDocument.h" |
| #include "html_inlineimpl.h" |
| #include "htmlnames.h" |
| #include "khtml_settings.h" |
| #include "RenderArena.h" |
| #include "RenderCanvas.h" |
| #include "render_frames.h" |
| #include "render_line.h" |
| #include "render_replaced.h" |
| #include "render_style.h" |
| |
| namespace WebCore { |
| |
| using namespace EventNames; |
| using namespace HTMLNames; |
| |
| class FrameViewPrivate { |
| public: |
| FrameViewPrivate(FrameView* view) |
| : m_hasBorder(false) |
| , layoutTimer(view, &FrameView::layoutTimerFired) |
| , hoverTimer(view, &FrameView::hoverTimerFired) |
| { |
| repaintRects = 0; |
| isTransparent = false; |
| vmode = hmode = ScrollBarAuto; |
| needToInitScrollBars = true; |
| reset(); |
| } |
| ~FrameViewPrivate() |
| { |
| delete repaintRects; |
| } |
| void reset() |
| { |
| underMouse = 0; |
| linkPressed = false; |
| useSlowRepaints = false; |
| dragTarget = 0; |
| borderTouched = false; |
| scrollBarMoved = false; |
| ignoreWheelEvents = false; |
| borderX = 30; |
| borderY = 30; |
| prevMouseX = -1; |
| prevMouseY = -1; |
| clickCount = 0; |
| clickNode = 0; |
| scrollingSelf = false; |
| layoutTimer.stop(); |
| delayedLayout = false; |
| mousePressed = false; |
| doFullRepaint = true; |
| layoutSchedulingEnabled = true; |
| layoutSuppressed = false; |
| layoutCount = 0; |
| firstLayout = true; |
| hoverTimer.stop(); |
| if (repaintRects) |
| repaintRects->clear(); |
| resizingFrameSet = 0; |
| } |
| |
| RefPtr<Node> underMouse; |
| |
| bool borderTouched : 1; |
| bool borderStart : 1; |
| bool scrollBarMoved : 1; |
| bool doFullRepaint : 1; |
| bool m_hasBorder : 1; |
| |
| ScrollBarMode vmode; |
| ScrollBarMode hmode; |
| bool linkPressed; |
| bool useSlowRepaints; |
| bool ignoreWheelEvents; |
| |
| int borderX, borderY; |
| int clickCount; |
| RefPtr<Node> clickNode; |
| |
| int prevMouseX, prevMouseY; |
| bool scrollingSelf; |
| Timer<FrameView> layoutTimer; |
| bool delayedLayout; |
| |
| bool layoutSchedulingEnabled; |
| bool layoutSuppressed; |
| int layoutCount; |
| |
| bool firstLayout; |
| bool needToInitScrollBars; |
| bool mousePressed; |
| bool isTransparent; |
| |
| Timer<FrameView> hoverTimer; |
| |
| // Used by objects during layout to communicate repaints that need to take place only |
| // after all layout has been completed. |
| DeprecatedPtrList<RenderObject::RepaintInfo>* repaintRects; |
| |
| RefPtr<Node> dragTarget; |
| RefPtr<HTMLFrameSetElement> resizingFrameSet; |
| }; |
| |
| FrameView::FrameView(Frame *frame) |
| : _refCount(1) |
| , m_frame(frame) |
| , d(new FrameViewPrivate(this)) |
| , m_medium("screen") |
| { |
| init(); |
| |
| show(); |
| } |
| |
| FrameView::~FrameView() |
| { |
| resetScrollBars(); |
| |
| ASSERT(_refCount == 0); |
| |
| if (d->hoverTimer.isActive()) |
| d->hoverTimer.stop(); |
| if (m_frame) { |
| // FIXME: Is this really the right place to call detach on the document? |
| if (Document* doc = m_frame->document()) |
| doc->detach(); |
| if (RenderPart* renderer = m_frame->ownerRenderer()) |
| renderer->setWidget(0); |
| } |
| |
| delete d; |
| d = 0; |
| } |
| |
| void FrameView::clearPart() |
| { |
| m_frame = 0; |
| } |
| |
| void FrameView::resetScrollBars() |
| { |
| // Reset the document's scrollbars back to our defaults before we yield the floor. |
| d->firstLayout = true; |
| suppressScrollBars(true); |
| ScrollView::setVScrollBarMode(d->vmode); |
| ScrollView::setHScrollBarMode(d->hmode); |
| suppressScrollBars(false); |
| } |
| |
| void FrameView::init() |
| { |
| _marginWidth = -1; // undefined |
| _marginHeight = -1; |
| _width = 0; |
| _height = 0; |
| } |
| |
| void FrameView::clear() |
| { |
| setStaticBackground(false); |
| |
| // FIXME: 6498 Should just be able to call m_frame->selection().clear() |
| m_frame->setSelection(SelectionController()); |
| |
| d->reset(); |
| |
| #if INSTRUMENT_LAYOUT_SCHEDULING |
| if (d->layoutTimer.isActive() && m_frame->document() && !m_frame->document()->ownerElement()) |
| printf("Killing the layout timer from a clear at %d\n", m_frame->document()->elapsedTime()); |
| #endif |
| d->layoutTimer.stop(); |
| |
| cleared(); |
| |
| suppressScrollBars(true); |
| } |
| |
| void FrameView::initScrollBars() |
| { |
| if (!d->needToInitScrollBars) |
| return; |
| d->needToInitScrollBars = false; |
| setScrollBarsMode(hScrollBarMode()); |
| } |
| |
| void FrameView::setMarginWidth(int w) |
| { |
| // make it update the rendering area when set |
| _marginWidth = w; |
| } |
| |
| void FrameView::setMarginHeight(int h) |
| { |
| // make it update the rendering area when set |
| _marginHeight = h; |
| } |
| |
| void FrameView::adjustViewSize() |
| { |
| if (m_frame->document()) { |
| Document *document = m_frame->document(); |
| |
| RenderCanvas* root = static_cast<RenderCanvas *>(document->renderer()); |
| if ( !root ) |
| return; |
| |
| int docw = root->docWidth(); |
| int doch = root->docHeight(); |
| |
| resizeContents(docw, doch); |
| } |
| } |
| |
| void FrameView::applyOverflowToViewport(RenderObject* o, ScrollBarMode& hMode, ScrollBarMode& vMode) |
| { |
| // Handle the overflow:hidden/scroll case for the body/html elements. WinIE treats |
| // overflow:hidden and overflow:scroll on <body> as applying to the document's |
| // scrollbars. The CSS2.1 draft states that HTML UAs should use the <html> or <body> element and XML/XHTML UAs should |
| // use the root element. |
| switch(o->style()->overflow()) { |
| case OHIDDEN: |
| hMode = vMode = ScrollBarAlwaysOff; |
| break; |
| case OSCROLL: |
| hMode = vMode = ScrollBarAlwaysOn; |
| break; |
| case OAUTO: |
| hMode = vMode = ScrollBarAuto; |
| break; |
| default: |
| // Don't set it at all. |
| ; |
| } |
| } |
| |
| bool FrameView::inLayout() const |
| { |
| return d->layoutSuppressed; |
| } |
| |
| int FrameView::layoutCount() const |
| { |
| return d->layoutCount; |
| } |
| |
| bool FrameView::needsFullRepaint() const |
| { |
| return d->doFullRepaint; |
| } |
| |
| void FrameView::addRepaintInfo(RenderObject* o, const IntRect& r) |
| { |
| if (!d->repaintRects) { |
| d->repaintRects = new DeprecatedPtrList<RenderObject::RepaintInfo>; |
| d->repaintRects->setAutoDelete(true); |
| } |
| |
| d->repaintRects->append(new RenderObject::RepaintInfo(o, r)); |
| } |
| |
| void FrameView::layout() |
| { |
| if (d->layoutSuppressed) |
| return; |
| |
| d->layoutTimer.stop(); |
| d->delayedLayout = false; |
| |
| if (!m_frame) { |
| // FIXME: Do we need to set _width here? |
| // FIXME: Should we set _height here too? |
| _width = visibleWidth(); |
| return; |
| } |
| |
| Document* document = m_frame->document(); |
| if (!document) { |
| // FIXME: Should we set _height here too? |
| _width = visibleWidth(); |
| return; |
| } |
| |
| d->layoutSchedulingEnabled = false; |
| |
| // Always ensure our style info is up-to-date. This can happen in situations where |
| // the layout beats any sort of style recalc update that needs to occur. |
| if (document->hasChangedChild()) |
| document->recalcStyle(); |
| |
| RenderCanvas* root = static_cast<RenderCanvas*>(document->renderer()); |
| if (!root) { |
| // FIXME: Do we need to set _width or _height here? |
| d->layoutSchedulingEnabled = true; |
| return; |
| } |
| |
| ScrollBarMode hMode = d->hmode; |
| ScrollBarMode vMode = d->vmode; |
| |
| RenderObject* rootRenderer = document->documentElement() ? document->documentElement()->renderer() : 0; |
| if (document->isHTMLDocument()) { |
| Node *body = static_cast<HTMLDocument*>(document)->body(); |
| if (body && body->renderer()) { |
| if (body->hasTagName(framesetTag)) { |
| body->renderer()->setNeedsLayout(true); |
| vMode = ScrollBarAlwaysOff; |
| hMode = ScrollBarAlwaysOff; |
| } |
| else if (body->hasTagName(bodyTag)) { |
| RenderObject* o = (rootRenderer->style()->overflow() == OVISIBLE) ? body->renderer() : rootRenderer; |
| applyOverflowToViewport(o, hMode, vMode); // Only applies to HTML UAs, not to XML/XHTML UAs |
| } |
| } |
| } |
| else if (rootRenderer) |
| applyOverflowToViewport(rootRenderer, hMode, vMode); // XML/XHTML UAs use the root element. |
| |
| #if INSTRUMENT_LAYOUT_SCHEDULING |
| if (d->firstLayout && !document->ownerElement()) |
| printf("Elapsed time before first layout: %d\n", document->elapsedTime()); |
| #endif |
| |
| d->doFullRepaint = d->firstLayout || root->printingMode(); |
| if (d->repaintRects) |
| d->repaintRects->clear(); |
| |
| // Now set our scrollbar state for the layout. |
| ScrollBarMode currentHMode = hScrollBarMode(); |
| ScrollBarMode currentVMode = vScrollBarMode(); |
| |
| bool didFirstLayout = false; |
| if (d->firstLayout || (hMode != currentHMode || vMode != currentVMode)) { |
| suppressScrollBars(true); |
| if (d->firstLayout) { |
| d->firstLayout = false; |
| didFirstLayout = true; |
| |
| // Set the initial vMode to AlwaysOn if we're auto. |
| if (vMode == ScrollBarAuto) |
| ScrollView::setVScrollBarMode(ScrollBarAlwaysOn); // This causes a vertical scrollbar to appear. |
| // Set the initial hMode to AlwaysOff if we're auto. |
| if (hMode == ScrollBarAuto) |
| ScrollView::setHScrollBarMode(ScrollBarAlwaysOff); // This causes a horizontal scrollbar to disappear. |
| } |
| |
| if (hMode == vMode) |
| ScrollView::setScrollBarsMode(hMode); |
| else { |
| ScrollView::setHScrollBarMode(hMode); |
| ScrollView::setVScrollBarMode(vMode); |
| } |
| |
| suppressScrollBars(false, true); |
| } |
| |
| int oldHeight = _height; |
| int oldWidth = _width; |
| |
| _height = visibleHeight(); |
| _width = visibleWidth(); |
| |
| if (oldHeight != _height || oldWidth != _width) |
| d->doFullRepaint = true; |
| |
| RenderLayer* layer = root->layer(); |
| |
| if (!d->doFullRepaint) { |
| layer->computeRepaintRects(); |
| root->repaintObjectsBeforeLayout(); |
| } |
| |
| root->layout(); |
| |
| m_frame->invalidateSelection(); |
| |
| d->layoutSchedulingEnabled=true; |
| d->layoutSuppressed = false; |
| |
| if (!root->printingMode()) |
| resizeContents(layer->width(), layer->height()); |
| |
| // Now update the positions of all layers. |
| layer->updateLayerPositions(d->doFullRepaint); |
| |
| // We update our widget positions right after doing a layout. |
| root->updateWidgetPositions(); |
| |
| if (d->repaintRects && !d->repaintRects->isEmpty()) { |
| // FIXME: Could optimize this and have objects removed from this list |
| // if they ever do full repaints. |
| RenderObject::RepaintInfo* r; |
| DeprecatedPtrListIterator<RenderObject::RepaintInfo> it(*d->repaintRects); |
| for ( ; (r = it.current()); ++it) |
| r->m_object->repaintRectangle(r->m_repaintRect); |
| d->repaintRects->clear(); |
| } |
| |
| d->layoutCount++; |
| |
| #if __APPLE__ |
| if (AccessibilityObjectCache::accessibilityEnabled()) |
| root->document()->getAccObjectCache()->postNotification(root, "AXLayoutComplete"); |
| updateDashboardRegions(); |
| #endif |
| |
| if (root->needsLayout()) { |
| //qDebug("needs layout, delaying repaint"); |
| scheduleRelayout(); |
| return; |
| } |
| setStaticBackground(d->useSlowRepaints); |
| |
| if (didFirstLayout) |
| m_frame->didFirstLayout(); |
| } |
| |
| // |
| // Event Handling |
| // |
| ///////////////// |
| |
| void FrameView::handleMousePressEvent(const PlatformMouseEvent& mouseEvent) |
| { |
| if (!m_frame->document()) |
| return; |
| |
| RefPtr<FrameView> protector(this); |
| |
| int xm, ym; |
| viewportToContents(mouseEvent.x(), mouseEvent.y(), xm, ym); |
| |
| d->mousePressed = true; |
| |
| MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(false, true, false, xm, ym, mouseEvent); |
| |
| if (m_frame->passSubframeEventToSubframe(mev)) { |
| invalidateClick(); |
| return; |
| } |
| |
| d->clickCount = mouseEvent.clickCount(); |
| d->clickNode = mev.innerNode(); |
| |
| bool swallowEvent = dispatchMouseEvent(mousedownEvent, mev.innerNode(), true, d->clickCount, mouseEvent, true); |
| |
| if (!swallowEvent) { |
| m_frame->handleMousePressEvent(mev); |
| // Many AK widgets run their own event loops and consume events while the mouse is down. |
| // When they finish, currentEvent is the mouseUp that they exited on. We need to update |
| // the khtml state with this mouseUp, which khtml never saw. |
| // If this event isn't a mouseUp, we assume that the mouseUp will be coming later. There |
| // is a hole here if the widget consumes the mouseUp and subsequent events. |
| if (m_frame->lastEventIsMouseUp()) |
| d->mousePressed = false; |
| } |
| } |
| |
| void FrameView::handleMouseDoubleClickEvent(const PlatformMouseEvent& mouseEvent) |
| { |
| if (!m_frame->document()) |
| return; |
| |
| RefPtr<FrameView> protector(this); |
| |
| int xm, ym; |
| viewportToContents(mouseEvent.x(), mouseEvent.y(), xm, ym); |
| |
| // We get this instead of a second mouse-up |
| d->mousePressed = false; |
| |
| MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(false, true, false, xm, ym, mouseEvent); |
| |
| if (m_frame->passSubframeEventToSubframe(mev)) |
| return; |
| |
| d->clickCount = mouseEvent.clickCount(); |
| bool swallowEvent = dispatchMouseEvent(mouseupEvent, mev.innerNode(), true, d->clickCount, mouseEvent, false); |
| |
| if (mev.innerNode() == d->clickNode) |
| dispatchMouseEvent(clickEvent, mev.innerNode(), true, d->clickCount, mouseEvent, true); |
| |
| // Qt delivers a release event AND a double click event. |
| if (!swallowEvent) { |
| m_frame->handleMouseReleaseEvent(mev); |
| m_frame->handleMouseReleaseDoubleClickEvent(mev); |
| } |
| |
| invalidateClick(); |
| } |
| |
| static bool isSubmitImage(Node *node) |
| { |
| return node && node->hasTagName(inputTag) && static_cast<HTMLInputElement*>(node)->inputType() == HTMLInputElement::IMAGE; |
| } |
| |
| static Cursor selectCursor(const MouseEventWithHitTestResults& event, Frame* frame, bool mousePressed) |
| { |
| // During selection, use an I-beam no matter what we're over. |
| if (mousePressed && frame->hasSelection()) |
| return iBeamCursor(); |
| |
| Node* node = event.innerNode(); |
| RenderObject* renderer = node ? node->renderer() : 0; |
| RenderStyle* style = renderer ? renderer->style() : 0; |
| |
| if (style && style->cursorImage() && !style->cursorImage()->image()->isNull()) |
| return style->cursorImage()->image(); |
| |
| switch (style ? style->cursor() : CURSOR_AUTO) { |
| case CURSOR_AUTO: |
| if (!event.url().isNull() || isSubmitImage(node)) |
| return handCursor(); |
| if ((node && node->isContentEditable()) || (renderer && renderer->isText() && renderer->canSelect())) |
| return iBeamCursor(); |
| return pointerCursor(); |
| case CURSOR_CROSS: |
| return crossCursor(); |
| case CURSOR_POINTER: |
| return handCursor(); |
| case CURSOR_MOVE: |
| return moveCursor(); |
| case CURSOR_E_RESIZE: |
| return eastResizeCursor(); |
| case CURSOR_W_RESIZE: |
| return westResizeCursor(); |
| case CURSOR_N_RESIZE: |
| return northResizeCursor(); |
| case CURSOR_S_RESIZE: |
| return southResizeCursor(); |
| case CURSOR_NE_RESIZE: |
| return northEastResizeCursor(); |
| case CURSOR_SW_RESIZE: |
| return southWestResizeCursor(); |
| case CURSOR_NW_RESIZE: |
| return northWestResizeCursor(); |
| case CURSOR_SE_RESIZE: |
| return southEastResizeCursor(); |
| case CURSOR_TEXT: |
| return iBeamCursor(); |
| case CURSOR_WAIT: |
| return waitCursor(); |
| case CURSOR_HELP: |
| return helpCursor(); |
| case CURSOR_DEFAULT: |
| return pointerCursor(); |
| } |
| return pointerCursor(); |
| } |
| |
| void FrameView::handleMouseMoveEvent(const PlatformMouseEvent& mouseEvent) |
| { |
| // in Radar 3703768 we saw frequent crashes apparently due to the |
| // part being null here, which seems impossible, so check for nil |
| // but also assert so that we can try to figure this out in debug |
| // builds, if it happens. |
| ASSERT(m_frame); |
| if (!m_frame || !m_frame->document()) |
| return; |
| |
| if (d->hoverTimer.isActive()) |
| d->hoverTimer.stop(); |
| |
| int xm, ym; |
| viewportToContents(mouseEvent.x(), mouseEvent.y(), xm, ym); |
| |
| if (d->resizingFrameSet) { |
| dispatchMouseEvent(mousemoveEvent, d->resizingFrameSet.get(), false, 0, mouseEvent, false); |
| return; |
| } |
| |
| // Treat mouse move events while the mouse is pressed as "read-only" in prepareMouseEvent |
| // if we are allowed to select. |
| // This means that :hover and :active freeze in the state they were in when the mouse |
| // was pressed, rather than updating for nodes the mouse moves over as you hold the mouse down. |
| MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(d->mousePressed && m_frame->mouseDownMayStartSelect(), |
| d->mousePressed, true, xm, ym, mouseEvent); |
| |
| if (!m_frame->passSubframeEventToSubframe(mev)) |
| setCursor(selectCursor(mev, m_frame.get(), d->mousePressed)); |
| |
| bool swallowEvent = dispatchMouseEvent(mousemoveEvent, mev.innerNode(), false, 0, mouseEvent, true); |
| if (!swallowEvent) |
| m_frame->handleMouseMoveEvent(mev); |
| } |
| |
| void FrameView::invalidateClick() |
| { |
| d->clickCount = 0; |
| d->clickNode = 0; |
| } |
| |
| void FrameView::handleMouseReleaseEvent(const PlatformMouseEvent& mouseEvent) |
| { |
| if (!m_frame->document()) |
| return; |
| |
| RefPtr<FrameView> protector(this); |
| |
| int xm, ym; |
| viewportToContents(mouseEvent.x(), mouseEvent.y(), xm, ym); |
| |
| d->mousePressed = false; |
| |
| if (d->resizingFrameSet) { |
| dispatchMouseEvent(mouseupEvent, d->resizingFrameSet.get(), true, d->clickCount, mouseEvent, false); |
| return; |
| } |
| |
| MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(false, false, false, xm, ym, mouseEvent); |
| |
| if (m_frame->passSubframeEventToSubframe(mev)) |
| return; |
| |
| bool swallowEvent = dispatchMouseEvent(mouseupEvent, mev.innerNode(), true, d->clickCount, mouseEvent, false); |
| |
| if (d->clickCount > 0 && mev.innerNode() == d->clickNode) |
| dispatchMouseEvent(clickEvent, mev.innerNode(), true, d->clickCount, mouseEvent, true); |
| |
| if (!swallowEvent) |
| m_frame->handleMouseReleaseEvent(mev); |
| |
| invalidateClick(); |
| } |
| |
| bool FrameView::dispatchDragEvent(const AtomicString &eventType, Node *dragTarget, const PlatformMouseEvent& event, Clipboard *clipboard) |
| { |
| int clientX, clientY; |
| viewportToContents(event.x(), event.y(), clientX, clientY); |
| |
| RefPtr<MouseEvent> me = new MouseEvent(eventType, |
| true, true, m_frame->document()->defaultView(), |
| 0, event.globalX(), event.globalY(), clientX, clientY, |
| event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), |
| 0, 0, clipboard); |
| |
| ExceptionCode ec = 0; |
| EventTargetNodeCast(dragTarget)->dispatchEvent(me.get(), ec, true); |
| return me->defaultPrevented(); |
| } |
| |
| bool FrameView::updateDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard) |
| { |
| bool accept = false; |
| int xm, ym; |
| viewportToContents(event.x(), event.y(), xm, ym); |
| MouseEventWithHitTestResults mev = m_frame->document()->prepareMouseEvent(true, false, false, xm, ym, PlatformMouseEvent()); |
| |
| // Drag events should never go to text nodes (following IE, and proper mouseover/out dispatch) |
| Node* newTarget = mev.innerNode(); |
| if (newTarget && newTarget->isTextNode()) |
| newTarget = newTarget->parentNode(); |
| |
| if (d->dragTarget != newTarget) { |
| // note this ordering is explicitly chosen to match WinIE |
| if (newTarget) |
| accept = dispatchDragEvent(dragenterEvent, newTarget, event, clipboard); |
| if (d->dragTarget) |
| dispatchDragEvent(dragleaveEvent, d->dragTarget.get(), event, clipboard); |
| } else { |
| if (newTarget) |
| accept = dispatchDragEvent(dragoverEvent, newTarget, event, clipboard); |
| } |
| d->dragTarget = newTarget; |
| |
| return accept; |
| } |
| |
| void FrameView::cancelDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard) |
| { |
| if (d->dragTarget) |
| dispatchDragEvent(dragleaveEvent, d->dragTarget.get(), event, clipboard); |
| d->dragTarget = 0; |
| } |
| |
| bool FrameView::performDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard) |
| { |
| bool accept = false; |
| if (d->dragTarget) |
| accept = dispatchDragEvent(dropEvent, d->dragTarget.get(), event, clipboard); |
| d->dragTarget = 0; |
| return accept; |
| } |
| |
| Node* FrameView::nodeUnderMouse() const |
| { |
| return d->underMouse.get(); |
| } |
| |
| bool FrameView::scrollTo(const IntRect &bounds) |
| { |
| d->scrollingSelf = true; // so scroll events get ignored |
| |
| int x, y, xe, ye; |
| x = bounds.x(); |
| y = bounds.y(); |
| xe = bounds.right() - 1; |
| ye = bounds.bottom() - 1; |
| |
| int deltax; |
| int deltay; |
| |
| int curHeight = visibleHeight(); |
| int curWidth = visibleWidth(); |
| |
| if (ye - y>curHeight-d->borderY) |
| ye = y + curHeight - d->borderY; |
| |
| if (xe - x>curWidth-d->borderX) |
| xe = x + curWidth - d->borderX; |
| |
| // is xpos of target left of the view's border? |
| if (x < contentsX() + d->borderX ) |
| deltax = x - contentsX() - d->borderX; |
| // is xpos of target right of the view's right border? |
| else if (xe + d->borderX > contentsX() + curWidth) |
| deltax = xe + d->borderX - ( contentsX() + curWidth ); |
| else |
| deltax = 0; |
| |
| // is ypos of target above upper border? |
| if (y < contentsY() + d->borderY) |
| deltay = y - contentsY() - d->borderY; |
| // is ypos of target below lower border? |
| else if (ye + d->borderY > contentsY() + curHeight) |
| deltay = ye + d->borderY - ( contentsY() + curHeight ); |
| else |
| deltay = 0; |
| |
| int maxx = curWidth - d->borderX; |
| int maxy = curHeight - d->borderY; |
| |
| int scrollX = deltax > 0 ? (deltax > maxx ? maxx : deltax) : deltax == 0 ? 0 : (deltax > -maxx ? deltax : -maxx); |
| int scrollY = deltay > 0 ? (deltay > maxy ? maxy : deltay) : deltay == 0 ? 0 : (deltay > -maxy ? deltay : -maxy); |
| |
| if (contentsX() + scrollX < 0) |
| scrollX = -contentsX(); |
| else if (contentsWidth() - visibleWidth() - contentsX() < scrollX) |
| scrollX = contentsWidth() - visibleWidth() - contentsX(); |
| |
| if (contentsY() + scrollY < 0) |
| scrollY = -contentsY(); |
| else if (contentsHeight() - visibleHeight() - contentsY() < scrollY) |
| scrollY = contentsHeight() - visibleHeight() - contentsY(); |
| |
| scrollBy(scrollX, scrollY); |
| |
| // generate abs(scroll.) |
| if (scrollX < 0) |
| scrollX = -scrollX; |
| if (scrollY < 0) |
| scrollY = -scrollY; |
| |
| d->scrollingSelf = false; |
| |
| return scrollX != maxx && scrollY != maxy; |
| } |
| |
| void FrameView::focusNextPrevNode(bool next) |
| { |
| // Sets the focus node of the document to be the node after (or if next is false, before) the current focus node. |
| // Only nodes that are selectable (i.e. for which isSelectable() returns true) are taken into account, and the order |
| // used is that specified in the HTML spec (see Document::nextFocusNode() and Document::previousFocusNode() |
| // for details). |
| |
| Document *doc = m_frame->document(); |
| Node *oldFocusNode = doc->focusNode(); |
| Node *newFocusNode; |
| |
| // Find the next/previous node from the current one |
| if (next) |
| newFocusNode = doc->nextFocusNode(oldFocusNode); |
| else |
| newFocusNode = doc->previousFocusNode(oldFocusNode); |
| |
| // If there was previously no focus node and the user has scrolled the document, then instead of picking the first |
| // focusable node in the document, use the first one that lies within the visible area (if possible). |
| if (!oldFocusNode && newFocusNode && d->scrollBarMoved) { |
| bool visible = false; |
| Node *toFocus = newFocusNode; |
| while (!visible && toFocus) { |
| if (toFocus->getRect().intersects(IntRect(contentsX(), contentsY(), visibleWidth(), visibleHeight()))) { |
| // toFocus is visible in the contents area |
| visible = true; |
| } else { |
| // toFocus is _not_ visible in the contents area, pick the next node |
| if (next) |
| toFocus = doc->nextFocusNode(toFocus); |
| else |
| toFocus = doc->previousFocusNode(toFocus); |
| } |
| } |
| |
| if (toFocus) |
| newFocusNode = toFocus; |
| } |
| |
| d->scrollBarMoved = false; |
| |
| if (!newFocusNode) |
| { |
| // No new focus node, scroll to bottom or top depending on next |
| if (next) |
| scrollTo(IntRect(contentsX()+visibleWidth()/2,contentsHeight(),0,0)); |
| else |
| scrollTo(IntRect(contentsX()+visibleWidth()/2,0,0,0)); |
| } |
| else { |
| // EDIT FIXME: if it's an editable element, activate the caret |
| // otherwise, hide it |
| if (newFocusNode->isContentEditable()) { |
| // make caret visible |
| } |
| else { |
| // hide caret |
| } |
| |
| // Scroll the view as necessary to ensure that the new focus node is visible |
| if (oldFocusNode) { |
| if (!scrollTo(newFocusNode->getRect())) |
| return; |
| } |
| else { |
| if (doc->renderer()) { |
| doc->renderer()->enclosingLayer()->scrollRectToVisible(IntRect(contentsX(), next ? 0: contentsHeight(), 0, 0)); |
| } |
| } |
| } |
| // Set focus node on the document |
| m_frame->document()->setFocusNode(newFocusNode); |
| } |
| |
| void FrameView::setMediaType( const DeprecatedString &medium ) |
| { |
| m_medium = medium; |
| } |
| |
| DeprecatedString FrameView::mediaType() const |
| { |
| // See if we have an override type. |
| DeprecatedString overrideType = m_frame->overrideMediaType(); |
| if (!overrideType.isNull()) |
| return overrideType; |
| return m_medium; |
| } |
| |
| |
| void FrameView::useSlowRepaints() |
| { |
| d->useSlowRepaints = true; |
| setStaticBackground(true); |
| } |
| |
| void FrameView::setScrollBarsMode(ScrollBarMode mode) |
| { |
| d->vmode = mode; |
| d->hmode = mode; |
| |
| ScrollView::setScrollBarsMode(mode); |
| } |
| |
| void FrameView::setVScrollBarMode(ScrollBarMode mode) |
| { |
| d->vmode = mode; |
| ScrollView::setVScrollBarMode(mode); |
| } |
| |
| void FrameView::setHScrollBarMode(ScrollBarMode mode) |
| { |
| d->hmode = mode; |
| ScrollView::setHScrollBarMode(mode); |
| } |
| |
| void FrameView::restoreScrollBar() |
| { |
| suppressScrollBars(false); |
| } |
| |
| void FrameView::setResizingFrameSet(HTMLFrameSetElement *frameSet) |
| { |
| d->resizingFrameSet = frameSet; |
| } |
| |
| bool FrameView::dispatchMouseEvent(const AtomicString& eventType, Node* targetNode, bool cancelable, |
| int clickCount, const PlatformMouseEvent& mouseEvent, bool setUnder) |
| { |
| // if the target node is a text node, dispatch on the parent node - rdar://4196646 |
| if (targetNode && targetNode->isTextNode()) |
| targetNode = targetNode->parentNode(); |
| d->underMouse = targetNode; |
| |
| // mouseout/mouseover |
| if (setUnder) { |
| int clientX, clientY; |
| viewportToContents(mouseEvent.x(), mouseEvent.y(), clientX, clientY); |
| if (d->prevMouseX != clientX || d->prevMouseY != clientY) { |
| // ### this code sucks. we should save the oldUnder instead of calculating |
| // it again. calculating is expensive! (Dirk) |
| // Also, there's no guarantee that the old under node is even around any more, |
| // so we could be sending a mouseout to a node that never got a mouseover. |
| RefPtr<Node> oldUnder; |
| if (d->prevMouseX >= 0) { |
| oldUnder = m_frame->document()->prepareMouseEvent(true, false, true, |
| d->prevMouseX, d->prevMouseY, mouseEvent).innerNode(); |
| if (oldUnder && oldUnder->isTextNode()) |
| oldUnder = oldUnder->parentNode(); |
| } |
| d->prevMouseX = clientX; |
| d->prevMouseY = clientY; |
| if (oldUnder != targetNode) { |
| // send mouseout event to the old node |
| if (oldUnder) |
| EventTargetNodeCast(oldUnder.get())->dispatchMouseEvent(mouseEvent, mouseoutEvent, 0, targetNode); |
| // send mouseover event to the new node |
| if (targetNode) |
| EventTargetNodeCast(targetNode)->dispatchMouseEvent(mouseEvent, mouseoverEvent, 0, oldUnder.get()); |
| } |
| } |
| } |
| |
| bool swallowEvent = false; |
| |
| if (targetNode) |
| swallowEvent = EventTargetNodeCast(targetNode)->dispatchMouseEvent(mouseEvent, eventType, clickCount); |
| |
| if (!swallowEvent && eventType == mousedownEvent) { |
| // Focus should be shifted on mouse down, not on a click. -dwh |
| // Blur current focus node when a link/button is clicked; this |
| // is expected by some sites that rely on onChange handlers running |
| // from form fields before the button click is processed. |
| Node* node = targetNode; |
| RenderObject* renderer = node ? node->renderer() : 0; |
| |
| // Walk up the render tree to search for a node to focus. |
| // Walking up the DOM tree wouldn't work for shadow trees, like those behind the engine-based text fields. |
| while (renderer) { |
| node = renderer->element(); |
| if (node && node->isFocusable()) |
| break; |
| renderer = renderer->parent(); |
| } |
| // If focus shift is blocked, we eat the event. Note we should never clear swallowEvent |
| // if the page already set it (e.g., by canceling default behavior). |
| if (node && node->isMouseFocusable()) { |
| if (!m_frame->document()->setFocusNode(node)) |
| swallowEvent = true; |
| } else if (!node || !node->focused()) { |
| if (!m_frame->document()->setFocusNode(0)) |
| swallowEvent = true; |
| } |
| } |
| |
| return swallowEvent; |
| } |
| |
| void FrameView::setIgnoreWheelEvents( bool e ) |
| { |
| d->ignoreWheelEvents = e; |
| } |
| |
| void FrameView::handleWheelEvent(PlatformWheelEvent& e) |
| { |
| Document *doc = m_frame->document(); |
| if (doc) { |
| RenderObject *docRenderer = doc->renderer(); |
| if (docRenderer) { |
| int x, y; |
| viewportToContents(e.x(), e.y(), x, y); |
| |
| RenderObject::NodeInfo hitTestResult(true, false); |
| doc->renderer()->layer()->hitTest(hitTestResult, x, y); |
| Node *node = hitTestResult.innerNode(); |
| |
| if (m_frame->passWheelEventToChildWidget(node)) { |
| e.accept(); |
| return; |
| } |
| if (node) { |
| EventTargetNodeCast(node)->dispatchWheelEvent(e); |
| if (e.isAccepted()) |
| return; |
| } |
| } |
| } |
| } |
| |
| void FrameView::scrollBarMoved() |
| { |
| // FIXME: Need to arrange for this to be called when the view is scrolled! |
| if (!d->scrollingSelf) |
| d->scrollBarMoved = true; |
| } |
| |
| void FrameView::repaintRectangle(const IntRect& r, bool immediate) |
| { |
| updateContents(r, immediate); |
| } |
| |
| void FrameView::layoutTimerFired(Timer<FrameView>*) |
| { |
| #if INSTRUMENT_LAYOUT_SCHEDULING |
| if (m_frame->document() && !m_frame->document()->ownerElement()) |
| printf("Layout timer fired at %d\n", m_frame->document()->elapsedTime()); |
| #endif |
| layout(); |
| } |
| |
| void FrameView::hoverTimerFired(Timer<FrameView>*) |
| { |
| d->hoverTimer.stop(); |
| m_frame->document()->prepareMouseEvent(false, false, true, d->prevMouseX, d->prevMouseY, PlatformMouseEvent()); |
| } |
| |
| void FrameView::scheduleRelayout() |
| { |
| if (!d->layoutSchedulingEnabled) |
| return; |
| |
| if (!m_frame->document() || !m_frame->document()->shouldScheduleLayout()) |
| return; |
| |
| int delay = m_frame->document()->minimumLayoutDelay(); |
| if (d->layoutTimer.isActive() && d->delayedLayout && !delay) |
| unscheduleRelayout(); |
| if (d->layoutTimer.isActive()) |
| return; |
| |
| d->delayedLayout = delay != 0; |
| |
| #if INSTRUMENT_LAYOUT_SCHEDULING |
| if (!m_frame->document()->ownerElement()) |
| printf("Scheduling layout for %d\n", delay); |
| #endif |
| |
| d->layoutTimer.startOneShot(delay * 0.001); |
| } |
| |
| bool FrameView::layoutPending() |
| { |
| return d->layoutTimer.isActive(); |
| } |
| |
| bool FrameView::haveDelayedLayoutScheduled() |
| { |
| return d->layoutTimer.isActive() && d->delayedLayout; |
| } |
| |
| void FrameView::unscheduleRelayout() |
| { |
| if (!d->layoutTimer.isActive()) |
| return; |
| |
| #if INSTRUMENT_LAYOUT_SCHEDULING |
| if (m_frame->document() && !m_frame->document()->ownerElement()) |
| printf("Layout timer unscheduled at %d\n", m_frame->document()->elapsedTime()); |
| #endif |
| |
| d->layoutTimer.stop(); |
| d->delayedLayout = false; |
| } |
| |
| bool FrameView::isTransparent() const |
| { |
| return d->isTransparent; |
| } |
| |
| void FrameView::setTransparent(bool isTransparent) |
| { |
| d->isTransparent = isTransparent; |
| } |
| |
| void FrameView::scheduleHoverStateUpdate() |
| { |
| if (!d->hoverTimer.isActive()) |
| d->hoverTimer.startOneShot(0); |
| } |
| |
| void FrameView::setHasBorder(bool b) |
| { |
| d->m_hasBorder = b; |
| updateBorder(); |
| } |
| |
| bool FrameView::hasBorder() const |
| { |
| return d->m_hasBorder; |
| } |
| |
| void FrameView::cleared() |
| { |
| if (m_frame) |
| if (RenderPart* renderer = m_frame->ownerRenderer()) |
| renderer->viewCleared(); |
| } |
| |
| } |
