source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/windows/data/WindowsMessage.java

package de.ugoe.cs.eventbench.windows.data;

import java.security.InvalidParameterException;
import java.util.HashMap;
import java.util.Map;

import de.ugoe.cs.eventbench.data.IReplayable;
import de.ugoe.cs.util.StringTools;

/**
 * <p>
 * Contains all informations about a windows message, i.e., all parameters that
 * are read when a windows message is parsed as well as its target, hwnd, etc.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 * 
 */
public class WindowsMessage implements IReplayable {

        /**
         * <p>
         * Id for object serialization.
         * </p>
         */
        private static final long serialVersionUID = 1L;

        /**
         * <p>
         * Type of the message.
         * </p>
         */
        final int type;

        /**
         * <p>
         * Window class of the message target. Default: ""
         * </p>
         */
        private String windowClass = "";

        /**
         * <p>
         * Resource Id of the message target. Default: 0
         * </p>
         */
        private int resourceId = 0;

        /**
         * <p>
         * XML representation of the message target.
         * </p>
         */
        private String xmlWindowDescription = "";

        /**
         * <p>
         * String that contains the names of all parent widgets and itself, separated by dots,
         * e.g., "GrandParent.Parent.self".
         * </p>
         */
        private String parentNames = null;

        /**
         * <p>
         * String that contains the window class of the parent widget.
         * </p>
         */
        private String parentClass = null;

        /**
         * <p>
         * LPARAM of the message. Default: 0
         * </p>
         */
        private long LPARAM = 0;

        /**
         * <p>
         * WPARAM of the message. Default: 0
         * </p>
         */
        private long WPARAM = 0;

        /**
         * <p>
         * If the LPARAM contains a HWND, this string stores the target of the HWND.
         * </p>
         */
        private String LPARAMasWindowDesc = null;

        /**
         * <p>
         * If the WPARAM contains a HWND, this string stores the target of the HWND.
         * </p>
         */
        private String WPARAMasWindowDesc = null;

        /**
         * <p>
         * Delay after sending the messages during a replay. Default: 0
         * </p>
         */
        private int delay = 0;

        /**
         * <p>
         * A map of all parameters, associated with the message, created during the
         * parsing of messages from the logs {@code param}-nodes.
         * </p>
         */
        private Map<String, String> params = new HashMap<String, String>();

        /**
         * <p>
         * Constructor. Creates a new message with a given message type.
         * </p>
         * 
         * @param type
         *            type of the message
         */
        public WindowsMessage(int type) {
                this.type = type;
        }

        /**
         * <p>
         * Adds a parameter to the message.
         * </p>
         * 
         * @param type
         *            type descriptor of the parameter
         * @param value
         *            value of the parameter
         */
        public void addParameter(String type, String value) {
                params.put(type, value);
                if (type.equals("LPARAM")) {
                        LPARAM = Long.parseLong(value);
                } else if (type.equals("WPARAM")) {
                        WPARAM = Long.parseLong(value);
                }
        }

        /**
         * <p>
         * Returns the type of the message.
         * </p>
         * 
         * @return type of the message
         */
        public int getType() {
                return type;
        }

        /**
         * <p>
         * Returns the value of a parameter, given its type. If the parameter is not
         * found, {@code null} is returned.
         * </p>
         * 
         * @param type
         *            type of the parameter
         * @return value of the parameter
         */
        public String getParameter(String type) {
                return params.get(type);
        }

        /**
         * <p>
         * Returns the window class of the message target.
         * </p>
         * 
         * @return window class of the message target
         */
        public String getWindowClass() {
                return windowClass;
        }

        /**
         * <p>
         * Returns the HWND the message is addressed to.
         * </p>
         * 
         * @return HWND the message is addressed to
         */
        public int getHwnd() {
                int hwnd = -1;
                String hwndString = getParameter("window.hwnd"); // possible, as
                                                                                                                        // "window.hwnd" is
                                                                                                                        // mandatory
                if (hwndString != null) {
                        hwnd = Integer.parseInt(hwndString);
                }
                return hwnd;
        }

        /**
         * <p>
         * Returns the resource Id of the message target.
         * </p>
         * 
         * @return resource Id of the message target
         */
        public int getWindowResourceId() {
                return resourceId;
        }

        /**
         * <p>
         * Two {@link WindowsMessage} are equal, if their {@link #type},
         * {@link #xmlWindowDescription}, and {@link #params} are equal.
         * </p>
         * 
         * @see java.lang.Object#equals(java.lang.Object)
         */
        @Override
        public boolean equals(Object other) {
                if (other == this) {
                        return true;
                }
                boolean isEqual = false;
                if (other instanceof WindowsMessage) {
                        isEqual = ((WindowsMessage) other).type == this.type
                                        && ((WindowsMessage) other).xmlWindowDescription
                                                        .equals(this.xmlWindowDescription)
                                        && ((WindowsMessage) other).params.equals(this.params);
                }
                return isEqual;
        }

        /*
         * (non-Javadoc)
         * 
         * @see java.lang.Object#hashCode()
         */
        @Override
        public int hashCode() {
                int multiplier = 17;
                int hash = 42;

                hash = multiplier * hash + type;
                hash = multiplier * hash + xmlWindowDescription.hashCode();
                hash = multiplier * hash + params.hashCode();

                return hash;
        }

        /**
         * <p>
         * Returns a string representation of the message of the form
         * "msg[target=HWND;type=TYPE]".
         * </p>
         * 
         * @see java.lang.Object#toString()
         */
        @Override
        public String toString() {
                return "msg[target=" + getParameter("window.hwnd") + ";type=" + type
                                + "]";
        }

        /**
         * <p>
         * Retrieves the target string of a message from a given {@link WindowTree}
         * through looking up the HWND the message is addressed to in the window
         * tree.
         * </p>
         * 
         * @param windowTree
         *            {@link WindowTree} from which the target is extracted
         * @throws InvalidParameterException
         *             thrown if HWND is not contained in windowTree
         */
        public void setTarget(WindowTree windowTree)
                        throws InvalidParameterException {
                int hwnd = Integer.parseInt(getParameter("window.hwnd"));
                WindowTreeNode node = windowTree.find(hwnd);
                if (node == null) {
                        throw new InvalidParameterException("No window with HWND " + hwnd
                                        + " found in window tree!");
                } else {
                        windowClass = node.getClassName();
                        resourceId = node.getResourceId();
                        xmlWindowDescription = node.xmlRepresentation();
                        parentNames = node.getParentNames();
                        WindowTreeNode parent = node.getParent();
                        if (parent == null) {
                                parentClass = "";
                        } else {
                                parentClass = parent.getClassName();
                        }
                }
        }

        /**
         * <p>
         * Sets the LPARAM of a message.
         * </p>
         * 
         * @param paramValue
         *            value of the LPARAM
         */
        public void setLPARAM(long paramValue) {
                LPARAM = paramValue;
        }

        /**
         * <p>
         * Sets the WPARAM of a message.
         * </p>
         * 
         * @param paramValue
         *            value of the WPARAM
         */
        public void setWPARAM(long paramValue) {
                WPARAM = paramValue;
        }

        /**
         * <p>
         * Returns the LPARAM of a message.
         * </p>
         * 
         * @return LPARAM of the message
         */
        public long getLPARAM() {
                return LPARAM;
        }

        /**
         * <p>
         * Returns the WPARAM of a message.
         * </p>
         * 
         * @return WPARAM of the message
         */
        public long getWPARAM() {
                return WPARAM;
        }

        /**
         * <p>
         * If the LPARAM contains a HWND, this function can be used to set a target
         * string to identify the HWND at run-time.
         * </p>
         * 
         * @param windowDesc
         *            target string
         */
        public void setLPARAMasWindowDesc(String windowDesc) {
                LPARAMasWindowDesc = windowDesc;
        }

        /**
         * <p>
         * If the WPARAM contains a HWND, this function can be used to set a target
         * string to identify the HWND at run-time.
         * </p>
         * 
         * @param windowDesc
         *            target string
         */
        public void setWPARAMasWindowDesc(String windowDesc) {
                WPARAMasWindowDesc = windowDesc;
        }

        /**
         * <p>
         * If the LPARAM contains a HWND and the target string for the HWND is set,
         * this function returns the target string. Otherwise, {@code null} is
         * returned.
         * </p>
         * 
         * @return target string if available; {@code null} otherwise
         */
        public String getLPARAMasWindowDesc() {
                return LPARAMasWindowDesc;
        }

        /**
         * <p>
         * If the WPARAM contains a HWND and the target string for the HWND is set,
         * this function returns the target string. Otherwise, {@code null} is
         * returned.
         * </p>
         * 
         * @return target string if available; {@code null} otherwise
         */
        public String getWPARAMasWindowDesc() {
                return WPARAMasWindowDesc;
        }

        /**
         * <p>
         * Returns the target string of the message.
         * </p>
         * 
         * @return target string of the message
         */
        public String getXmlWindowDescription() {
                return xmlWindowDescription;
        }

        /**
         * <p>
         * Sets the target string manually.
         * </p>
         * 
         * @param xmlWindowDescription
         *            target string
         */
        public void setXmlWindowDescription(String xmlWindowDescription) {
                this.xmlWindowDescription = xmlWindowDescription;
        }

        /**
         * <p>
         * Returns the delay after this message during replays.
         * </p>
         * 
         * @return delay after this message
         */
        public int getDelay() {
                return delay;
        }

        /**
         * <p>
         * Sets the delay after this message during replays.
         * </p>
         * 
         * @param delay
         *            delay after this message
         */
        public void setDelay(int delay) {
                this.delay = delay;
        }

        /**
         * <p>
         * Returns the parent names separated by dots, e.g., "GrandParent.Parent".
         * </p>
         * 
         * @return names of the parents
         */
        public String getParentNames() {
                return parentNames;
        }

        /**
         * <p>
         * Returns the window class of the parent.
         * </p>
         * 
         * @return window classes of the parents
         */
        public String getParentClass() {
                return parentClass;
        }

        /**
         * <p>
         * Returns the number of parameters stored together with this message.
         * </p>
         * 
         * @return number of parameters stored with this message
         */
        public int getNumParams() {
                return params.size();
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.eventbench.data.IReplayable#getReplay()
         */
        @Override
        public String getReplay() {
                StringBuilder currentMsgStr = new StringBuilder(400);
                currentMsgStr.append("  <msg type=\"" + type + "\" ");
                currentMsgStr.append("LPARAM=\"" + LPARAM + "\" ");
                currentMsgStr.append("WPARAM=\"" + WPARAM + "\" ");
                currentMsgStr.append("delay=\"" + delay + "\">");
                if (LPARAMasWindowDesc != null) {
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append("   <LPARAM>");
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append(LPARAMasWindowDesc);
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append("</LPARAM>");
                }
                if (WPARAMasWindowDesc != null) {
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append("   <WPARAM>");
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append(WPARAMasWindowDesc);
                        currentMsgStr.append(StringTools.ENDLINE);
                        currentMsgStr.append("   </WPARAM>");
                }
                currentMsgStr.append(StringTools.ENDLINE);
                currentMsgStr.append(xmlWindowDescription);
                currentMsgStr.append(StringTools.ENDLINE);
                currentMsgStr.append("  </msg>");
                currentMsgStr.append(StringTools.ENDLINE);
                return currentMsgStr.toString();
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.eventbench.data.IReplayable#getTarget()
         */
        @Override
        public String getTarget() {
                return xmlWindowDescription;
        }
}