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The QWebPage class provides a widget that is used to view and edit web documents. More...
#include <QWebPage>
Inherits QObject.
This class was introduced in Qt 4.4.
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The QWebPage class provides a widget that is used to view and edit web documents.
QWebPage holds a main frame responsible for web content, settings, the history of navigated links as well as actions. This class can be used, together with QWebFrame, if you want to provide functionality like QWebView in a setup without widgets.
This enum describes the options available to QWebPage's findText() function. The options can be OR-ed together from the following list:
Constant | Value | Description |
---|---|---|
QWebPage::FindBackward | 1 | Searches backwards instead of forwards. |
QWebPage::FindCaseSensitively | 2 | By default findText() works case insensitive. Specifying this option changes the behaviour to a case sensitive find operation. |
QWebPage::FindWrapsAroundDocument | 4 | Makes findText() restart from the beginning of the document if the end was reached and the text was not found. |
The FindFlags type is a typedef for QFlags<FindFlag>. It stores an OR combination of FindFlag values.
This enum defines the delegation policies a webpage can have when activating links and emitting the linkClicked() signal.
Constant | Value | Description |
---|---|---|
QWebPage::DontDelegateLinks | 0 | No links are delegated. Instead, QWebPage tries to handle them all. |
QWebPage::DelegateExternalLinks | 1 | When activating links that point to documents not stored on the local filesystem or an equivalent - such as the Qt resource system - then linkClicked() is emitted. |
QWebPage::DelegateAllLinks | 2 | Whenever a link is activated the linkClicked() signal is emitted. |
This enum describes the types of navigation available when browsing through hyperlinked documents.
Constant | Value | Description |
---|---|---|
QWebPage::NavigationTypeLinkClicked | 0 | The user clicked on a link or pressed return on a focused link. |
QWebPage::NavigationTypeFormSubmitted | 1 | The user activated a submit button for an HTML form. |
QWebPage::NavigationTypeBackOrForward | 2 | Navigation to a previously shown document in the back or forward history is requested. |
QWebPage::NavigationTypeReload | 3 | The user activated the reload action. |
QWebPage::NavigationTypeFormResubmitted | 4 | An HTML form was submitted a second time. |
QWebPage::NavigationTypeOther | 5 | A navigation to another document using a method not listed above. |
Constant | Value | Description |
---|---|---|
QWebPage::NoWebAction | -1 | No action is triggered. |
QWebPage::OpenLink | 0 | Open the current link. |
QWebPage::OpenLinkInNewWindow | 1 | Open the current link in a new window. |
QWebPage::OpenFrameInNewWindow | 2 | Replicate the current frame in a new window. |
QWebPage::DownloadLinkToDisk | 3 | Download the current link to the disk. |
QWebPage::CopyLinkToClipboard | 4 | Copy the current link to the clipboard. |
QWebPage::OpenImageInNewWindow | 5 | Open the highlighted image in a new window. |
QWebPage::DownloadImageToDisk | 6 | Download the highlighted image to the disk. |
QWebPage::CopyImageToClipboard | 7 | Copy the highlighted image to the clipboard. |
QWebPage::Back | 8 | Navigate back in the history of navigated links. |
QWebPage::Forward | 9 | Navigate forward in the history of navigated links. |
QWebPage::Stop | 10 | Stop loading the current page. |
QWebPage::Reload | 11 | Reload the current page. |
QWebPage::Cut | 12 | Cut the content currently selected into the clipboard. |
QWebPage::Copy | 13 | Copy the content currently selected into the clipboard. |
QWebPage::Paste | 14 | Paste content from the clipboard. |
QWebPage::Undo | 15 | Undo the last editing action. |
QWebPage::Redo | 16 | Redo the last editing action. |
QWebPage::MoveToNextChar | 17 | Move the cursor to the next character. |
QWebPage::MoveToPreviousChar | 18 | Move the cursor to the previous character. |
QWebPage::MoveToNextWord | 19 | Move the cursor to the next word. |
QWebPage::MoveToPreviousWord | 20 | Move the cursor to the previous word. |
QWebPage::MoveToNextLine | 21 | Move the cursor to the next line. |
QWebPage::MoveToPreviousLine | 22 | Move the cursor to the previous line. |
QWebPage::MoveToStartOfLine | 23 | Move the cursor to the start of the line. |
QWebPage::MoveToEndOfLine | 24 | Move the cursor to the end of the line. |
QWebPage::MoveToStartOfBlock | 25 | Move the cursor to the start of the block. |
QWebPage::MoveToEndOfBlock | 26 | Move the cursor to the end of the block. |
QWebPage::MoveToStartOfDocument | 27 | Move the cursor to the start of the document. |
QWebPage::MoveToEndOfDocument | 28 | Move the cursor to the end of the document. |
QWebPage::SelectNextChar | 29 | Select to the next character. |
QWebPage::SelectPreviousChar | 30 | Select to the previous character. |
QWebPage::SelectNextWord | 31 | Select to the next word. |
QWebPage::SelectPreviousWord | 32 | Select to the previous word. |
QWebPage::SelectNextLine | 33 | Select to the next line. |
QWebPage::SelectPreviousLine | 34 | Select to the previous line. |
QWebPage::SelectStartOfLine | 35 | Select to the start of the line. |
QWebPage::SelectEndOfLine | 36 | Select to the end of the line. |
QWebPage::SelectStartOfBlock | 37 | Select to the start of the block. |
QWebPage::SelectEndOfBlock | 38 | Select to the end of the block. |
QWebPage::SelectStartOfDocument | 39 | Select to the start of the document. |
QWebPage::SelectEndOfDocument | 40 | Select to the end of the document. |
QWebPage::DeleteStartOfWord | 41 | Delete to the start of the word. |
QWebPage::DeleteEndOfWord | 42 | Delete to the end of the word. |
QWebPage::SetTextDirectionDefault | 43 | Set the text direction to the default direction. |
QWebPage::SetTextDirectionLeftToRight | 44 | Set the text direction to left-to-right. |
QWebPage::SetTextDirectionRightToLeft | 45 | Set the text direction to right-to-left. |
QWebPage::ToggleBold | 46 | Toggle the formatting between bold and normal weight. |
QWebPage::ToggleItalic | 47 | Toggle the formatting between italic and normal style. |
QWebPage::ToggleUnderline | 48 | Toggle underlining. |
QWebPage::InspectElement | 49 | Show the Web Inspector with the currently highlighted HTML element. |
Constant | Value | Description |
---|---|---|
QWebPage::WebBrowserWindow | 0 | The window is a regular web browser window. |
QWebPage::WebModalDialog | 1 | The window acts as modal dialog. |
This property holds whether QWebPage should forward unsupported content through the unsupportedContent signal.
If disabled the download of such content is aborted immediately.
By default unsupported content is not forwarded.
Access functions:
This property holds how QWebPage should delegate the handling of links through the linkClicked() signal.
The default is to delegate no links.
Access functions:
This property holds whether the page contains unsubmitted form data.
Access functions:
This property holds the text currently selected.
Access functions:
This property holds the size of the viewport.
The size affects for example the visibility of scrollbars if the document is larger than the viewport.
Access functions:
Constructs an empty QWebView with parent parent.
Destructor.
This function is called whenever WebKit requests to navigate frame to the resource specified by request by means of the specified navigation type type.
The default implementation interprets the page's linkDelegationPolicy and emits linkClicked accordingly or returns true to let QWebPage handle the navigation itself.
Returns a QAction for the specified WebAction action.
The action is owned by the QWebPage but you can customize the look by changing its properties.
QWebPage also takes care of implementing the action, so that upon triggering the corresponding action is performed on the page.
Returns the number of bytes that were received from the network to render the current page.
This function is called when the web content requests a file name, for example as a result of the user clicking on a "file upload" button in a HTML form.
A suggested filename may be provided in suggestedFile. The frame originating the request is provided as parentFrame.
This function is called whenever WebKit encounters a HTML object element with type "application/x-qt-plugin". The classid, url, paramNames and paramValues correspond to the HTML object element attributes and child elements to configure the embeddable object.
This function is called whenever WebKit wants to create a new window of the given type, for example when a JavaScript program requests to open a document in a new window.
If the new window can be created, the new window's QWebPage is returned; otherwise a null pointer is returned.
If the view associated with the web page is a QWebView object, then the default implementation forwards the request to QWebView's createWindow() function; otherwise it returns a null pointer.
Returns the frame currently active.
This signal is emitted when the user decides to download a link. The url of the link as well as additional meta-information is contained in request.
Finds the next occurrence of the string, subString, in the page, using the given options. Returns true of subString was found and selects the match visually; otherwise returns false.
Similar to QWidget::focusNextPrevChild it focuses the next focusable web element if next is true; otherwise the previous element is focused.
Returns true if it can find a new focusable element, or false if it can't.
This signal is emitted whenever the page creates a new frame.
This signal is emitted whenever the document wants to change the position and size of the page to geom. This can happen for example through JavaScript.
Returns a pointer to the view's history of navigated web pages.
This method is used by the input method to query a set of properties of the page to be able to support complex input method operations as support for surrounding text and reconversions.
property specifies which property is queried.
See also QWidget::inputMethodEvent(), QInputMethodEvent, and QInputContext.
This function is called whenever a JavaScript program running inside frame calls the alert() function with the message msg.
The default implementation shows the message, msg, with QMessageBox::information.
This function is called whenever a JavaScript program running inside frame calls the confirm() function with the message, msg. Returns true if the user confirms the message; otherwise returns false.
The default implementation executes the query using QMessageBox::information with QMessageBox::Yes and QMessageBox::No buttons.
This function is called whenever a JavaScript program tries to print a message to the web browser's console.
For example in case of evaluation errors the source URL may be provided in sourceID as well as the lineNumber.
The default implementation prints nothing.
This function is called whenever a JavaScript program running inside frame tries to prompt the user for input. The program may provide an optional message, msg, as well as a default value for the input in defaultValue.
If the prompt was cancelled by the user the implementation should return false; otherwise the result should be written to result and true should be returned.
The default implementation uses QInputDialog::getText.
This signal is emitted whenever the user clicks on a link and the page's linkDelegationPolicy property is set to delegate the link handling for the specified url.
By default no links are delegated and are handled by QWebPage instead.
This signal is emitted when the mouse is hovering over a link. The first parameter is the link url, the second is the link title if any, and third textContent is the text content. Method is emitter with both empty parameters when the mouse isn't hovering over any link element.
This signal is emitted when the global progress status changes. The current value is provided by progress and scales from 0 to 100, which is the default range of QProgressBar. It accumulates changes from all the child frames.
Returns the main frame of the page.
The main frame provides access to the hierarchy of sub-frames and is also needed if you want to explicitly render a web page into a given painter.
This signal is emitted whenever the visibility of the menubar in a web browser window that hosts QWebPage should be changed to visible.
This signal is emitted when for example the position of the cursor in an editable form element changes. It is used inform input methods about the new on-screen position where the user is able to enter text. This signal is usually connected to QWidget's updateMicroFocus() slot.
Returns the QNetworkAccessManager that is responsible for serving network requests for this QWebPage.
See also setNetworkAccessManager().
This signal is emitted whenever this QWebPage should be updated and no view was set. dirtyRect contains the area that needs to be updated. To paint the QWebPage get the mainFrame() and call the render(QPainter*, const QRegion&) method with the dirtyRect as the second parameter.
See also mainFrame() and view().
This signal is emitted whenever the content given by rectToScroll needs to be scrolled dx and dy downwards and no view was set.
See also view().
This signal is emitted whenever the selection changes.
Sets the QNetworkAccessManager manager that is responsible for serving network requests for this QWebPage.
See also networkAccessManager().
Sets the view that is associated with the web page.
See also view().
Returns a pointer to the page's settings object.
This signal is emitted when the statusbar text is changed by the page.
This signal is emitted whenever the visibility of the statusbar in a web browser window that hosts QWebPage should be changed to visible.
This signal is emitted whenever the visibility of the toolbar in a web browser window that hosts QWebPage should be changed to visible.
Returns the total number of bytes that were received from the network to render the current page, including extra content such as embedded images.
This function can be called to trigger the specified action. It is also called by QtWebKit if the user triggers the action, for example through a context menu item.
If action is a checkable action then checked specified whether the action is toggled or not.
Returns a pointer to the undo stack used for editable content.
This signals is emitted when webkit cannot handle a link the user navigated to.
At signal emissions time the meta data of the QNetworkReply reply is available.
Note: This signal is only emitted if the forwardUnsupportedContent property is set to true.
This function is called when a user agent for HTTP requests is needed. You can re-implement this function to dynamically return different user agent's for different urls, based on the url parameter.
Returns the view widget that is associated with the web page.
See also setView().
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