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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.ole.win32;
import org.eclipse.swt.ole.win32.*;
/**
* Wrapper for an OleAutomation object used to send commands
* to a Win32 "Shell.Explorer" OLE control.
*
* Instances of this class manage the setup, typical use and teardown of
* a simple web browser.
*/
class OleWebBrowser {
/* See the Windows Platform SDK documentation for more information about the
* OLE control used here and its usage.
*/
// Generated from typelib filename: shdocvw.dll
// Constants for WebBrowser CommandStateChange
public static final int CSC_UPDATECOMMANDS = -1;
public static final int CSC_NAVIGATEFORWARD = 1;
public static final int CSC_NAVIGATEBACK = 2;
// COnstants for Web Browser ReadyState
public static final int READYSTATE_UNINITIALIZED = 0;
public static final int READYSTATE_LOADING = 1;
public static final int READYSTATE_LOADED = 2;
public static final int READYSTATE_INTERACTIVE = 3;
public static final int READYSTATE_COMPLETE = 4;
// Web Browser Control Events
public static final int BeforeNavigate = 100; // Fired when a new hyperlink is being navigated to.
public static final int NavigateComplete = 101; // Fired when the document being navigated to becomes visible and enters the navigation stack.
public static final int StatusTextChange = 102; // Statusbar text changed.
public static final int ProgressChange = 108; // Fired when download progress is updated.
public static final int DownloadComplete = 104; // Download of page complete.
public static final int CommandStateChange = 105; // The enabled state of a command changed
public static final int DownloadBegin = 106; // Download of a page started.
public static final int NewWindow = 107; // Fired when a new window should be created.
public static final int TitleChange = 113; // Document title changed.
public static final int FrameBeforeNavigate = 200; // Fired when a new hyperlink is being navigated to in a frame.
public static final int FrameNavigateComplete = 201; // Fired when a new hyperlink is being navigated to in a frame.
public static final int FrameNewWindow = 204; // Fired when a new window should be created.
public static final int Quit = 103; // Fired when application is quiting.
public static final int WindowMove = 109; // Fired when window has been moved.
public static final int WindowResize = 110; // Fired when window has been sized.
public static final int WindowActivate = 111; // Fired when window has been activated.
public static final int PropertyChange = 112; // Fired when the PutProperty method has been called.
// Web Browser properties
public static final int DISPID_READYSTATE = -525;
private OleAutomation oleAutomation;
/**
* Creates a Web browser control.
* <p>
* Typical use:<br>
* <code>
* OleControlSite oleControlSite = new OleControlSite(oleFrame, style, "Shell.Explorer");<br>
* OleAutomation oleAutomation = new OleAutomation(oleControlSite);<br>
* OleWebBrowser webBrowser = new OleWebBrowser(oleControlSite, oleAutomation);<br>
* </code>
*
* @param oleAutomation the OleAutomation object for this control.
* @param oleControlSite the OleControlSite object for this control.
*/
public OleWebBrowser(OleAutomation oleAutomation) {
this.oleAutomation = oleAutomation;
}
/**
* Disposes of the Web browser control.
*/
public void dispose() {
if (oleAutomation != null) oleAutomation.dispose();
oleAutomation = null;
}
/*
* Interact with the Control via OLE Automation
*
* Note: You can hard code the DISPIDs if you know them beforehand
* this is of course the fastest way, but you increase coupling
* to the control.
*/
/**
* Returns the current web page title.
*
* @return the current web page title String
*/
public String getLocationName() {
// dispid=210, type=PROPGET, name="LocationName"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"LocationName"});
int dispIdMember = rgdispid[0];
Variant pVarResult = oleAutomation.getProperty(dispIdMember);
if (pVarResult == null || pVarResult.getType() != OLE.VT_BSTR) return null;
return pVarResult.getString();
}
/**
* Returns the current URL.
*
* @return the current URL String
*/
public String getLocationURL() {
// dispid=211, type=PROPGET, name="LocationURL"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"LocationURL"});
int dispIdMember = rgdispid[0];
Variant pVarResult = oleAutomation.getProperty(dispIdMember);
if (pVarResult == null || pVarResult.getType() != OLE.VT_BSTR) return null;
return pVarResult.getString();
}
/**
* Returns the current state of the control.
*
* @return the current state of the control, one of:
* READYSTATE_UNINITIALIZED;
* READYSTATE_LOADING;
* READYSTATE_LOADED;
* READYSTATE_INTERACTIVE;
* READYSTATE_COMPLETE.
*/
public int getReadyState() {
// dispid=4294966771, type=PROPGET, name="ReadyState"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"ReadyState"});
int dispIdMember = rgdispid[0];
Variant pVarResult = oleAutomation.getProperty(dispIdMember);
if (pVarResult == null || pVarResult.getType() != OLE.VT_I4) return -1;
return pVarResult.getInt();
}
/**
* Navigates backwards through previously visited web sites.
*/
public void GoBack() {
// dispid=100, type=METHOD, name="GoBack"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"GoBack"});
int dispIdMember = rgdispid[0];
oleAutomation.invoke(dispIdMember);
}
/**
* Navigates backwards through previously visited web sites.
*/
public void GoForward() {
// dispid=101, type=METHOD, name="GoForward"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"GoForward"});
int dispIdMember = rgdispid[0];
oleAutomation.invoke(dispIdMember);
}
/**
* Navigates to home page.
*/
public void GoHome() {
// dispid=102, type=METHOD, name="GoHome"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"GoHome"});
int dispIdMember = rgdispid[0];
oleAutomation.invoke(dispIdMember);
}
/**
* Navigates to user-specified Web search gateway.
*/
public void GoSearch() {
// dispid=103, type=METHOD, name="GoSearch"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"GoSearch"});
int dispIdMember = rgdispid[0];
oleAutomation.invoke(dispIdMember);
}
/**
* Navigates to a particular URL.
*/
public void Navigate(String url) {
// dispid=104, type=METHOD, name="Navigate"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"Navigate", "URL"});
int dispIdMember = rgdispid[0];
Variant[] rgvarg = new Variant[1];
rgvarg[0] = new Variant(url);
int[] rgdispidNamedArgs = new int[1];
rgdispidNamedArgs[0] = rgdispid[1]; // identifier of argument
oleAutomation.invoke(dispIdMember, rgvarg, rgdispidNamedArgs);
}
/**
* Refreshes the currently viewed page.
*
* @return the platform-defined result code for the "Refresh" method invocation
*/
public void Refresh(){
// dispid= 4294966746, type=METHOD, name="Refresh"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"Refresh"});
int dispIdMember = rgdispid[0];
oleAutomation.invokeNoReply(dispIdMember);
}
/**
* Aborts loading of the currnet page.
*
* @return the platform-defined result code for the "Stop" method invocation
*/
public void Stop() {
// dispid=106, type=METHOD, name="Stop"
int[] rgdispid = oleAutomation.getIDsOfNames(new String[]{"Stop"});
int dispIdMember = rgdispid[0];
oleAutomation.invoke(dispIdMember);
}
}
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