graphicalinstaller.java

用于移动设备上的java虚拟机源代码

        progressForm.set(progressGaugeIndex, progressGauge);

        // this ends the background thread of gauge.
        oldProgressGauge.setValue(Gauge.CONTINUOUS_IDLE);

        if (url == null) {
            urlItem = new StringItem("", "");
            progressForm.set(progressUrlIndex, urlItem);
        } else if (url.length() != 0) {
            urlItem =
                new StringItem(Resource.getString("Website") + ": ", url);
            progressForm.set(progressUrlIndex, urlItem);
        }

        lastDisplayChange = System.currentTimeMillis();
    }

    /**
     * Give the user a chance to act on warning during an installation.
     *
     * @param name name of the MIDlet suite to insert into the message
     * @param vendor vendor of the MIDlet suite to insert into the message,
     *        can be null
     * @param version version of the MIDlet suite to insert into the message,
     *        can be null
     * @param jadUrl URL of a JAD, can be null
     * @param e last exception from the installer
     */
    private void warnUser(String name, String vendor, String version,
                          String jadUrl, InvalidJadException e) {
        Form warningForm;

        warningForm = new Form(null);
        warningForm.setTitle(Resource.getString("Warning"));
        warningForm.append(translateJadException(e, name, vendor, version,
                                                 jadUrl)); 
        warningForm.addCommand(cancelCmd);
        warningForm.addCommand(okCmd);
        warningForm.setCommandListener(this);
        display.setCurrent(warningForm);
    }

    /**
     * Resume the install after a the user overrides a warning.
     */
    private void resumeInstallAfterWarning() {
        // redisplay the progress form
        display.setCurrent(progressForm);

        backgroundInstaller.continueInstall = true;
        synchronized (backgroundInstaller) {
            backgroundInstaller.notify();
        }
    }

    /**
     * Ask for a username and password.
     */
    private void getUsernameAndPassword() {
        getUsernameAndPasswordCommon("");
    }

    /**
     * Ask for proxy username and password.
     */
    private void getProxyUsernameAndPassword() {
        getUsernameAndPasswordCommon("Firewall Authentication");
    }

    /**
     * Ask a username and password.
     *
     * @param title title of the password form
     */
    private void getUsernameAndPasswordCommon(String title) {
        if (passwordForm == null) {
            passwordForm = new Form(null);

            usernameField = new TextField(
                            Resource.getString("Please Enter ID"), null, 40,
                            TextField.ANY);
            passwordForm.append(usernameField);

            passwordField = new TextField(
                            Resource.getString("Password"), null, 40,
                            TextField.PASSWORD);
            passwordForm.append(passwordField);
            passwordForm.addCommand(cancelCmd);
            passwordForm.addCommand(nextCmd);
            passwordForm.setCommandListener(this);
        }

        passwordForm.setTitle(Resource.getString(title));
        passwordField.setString("");
        display.setCurrent(passwordForm);
    }

    /**
     * Resume the install of the suite with a password and username.
     */
    private void resumeInstallWithPassword() {
        String username;
        String password;


        username = usernameField.getString();
        password = passwordField.getString();
        if (username == null || username.length() == 0) {
            Alert a = new Alert(Resource.getString("Error"), 
                             Resource.getString(
                             "The ID has not been entered."),
                             null, AlertType.ERROR);
            a.setTimeout(ALERT_TIMEOUT);
            display.setCurrent(a, passwordForm);
            return;
        }

        if (password == null || password.length() == 0) {
            Alert a = new Alert(Resource.getString("Error"), 
                                Resource.getString(
                                "The password has not been entered."),
                                null, AlertType.ERROR);
            a.setTimeout(ALERT_TIMEOUT);
            display.setCurrent(a, passwordForm);
            return;
        }

        // redisplay the progress form
        display.setCurrent(progressForm);

        if (backgroundInstaller.proxyAuth) {
            backgroundInstaller.installState.setProxyUsername(username);
            backgroundInstaller.installState.setProxyPassword(password);
        } else {
            backgroundInstaller.installState.setUsername(username);
            backgroundInstaller.installState.setPassword(password);
        }

        backgroundInstaller.continueInstall = true;
        synchronized (backgroundInstaller) {
            backgroundInstaller.notify();
        }
    }

    /**
     * Confirm the JAR download with the user.
     *
     * @param state current state of the install.
     */
    private void displayDownloadConfirmation(InstallState state) {
        Form infoForm;
        StringItem item;
        String name;
        String desc;
        StringBuffer label = new StringBuffer(40);
        StringBuffer value = new StringBuffer(40);
        String[] values = new String[1];

        name = state.getAppProperty(Installer.SUITE_NAME_PROP);

        try {
            infoForm = new Form(null);

            infoForm.setTitle(Resource.getString("Confirmation"));

            values[0] = name;
            item = new StringItem(null, Resource.getString(
                "Are you sure you want to install \"%1\"?", values));
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            // round up the size to a Kilobyte
            label.append(Resource.getString("Size"));
            label.append(": ");
            value.setLength(0);
            value.append(state.getJarSize());
            value.append(" K");
            item = new StringItem(label.toString(), value.toString());
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            label.setLength(0);
            label.append(Resource.getString("Version"));
            label.append(": ");
            value.setLength(0);
            item = new StringItem(label.toString(),
                       state.getAppProperty(Installer.VERSION_PROP));
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            label.setLength(0);
            label.append(Resource.getString("Vendor"));
            label.append(": ");
            item = new StringItem(label.toString(),
                      state.getAppProperty(Installer.VENDOR_PROP));
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            desc = state.getAppProperty(Installer.DESC_PROP);
            if (desc != null) {
                label.setLength(0);
                label.append(Resource.getString("Description"));
                label.append(": ");
                item = new StringItem(label.toString(), desc);
                item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
                infoForm.append(item);
            }

            label.setLength(0);
            label.append(Resource.getString("Website"));
            label.append(": ");
            infoForm.append(new StringItem(label.toString(),
                                           state.getJarUrl()));

            infoForm.addCommand(continueCmd);
            infoForm.addCommand(cancelCmd);
            infoForm.setCommandListener(this);

            // We need to prevent "flashing" on fast development platforms.
            while (System.currentTimeMillis() - lastDisplayChange <
                   ALERT_TIMEOUT);

            display.setCurrent(infoForm);
        } catch (Exception ex) {
            StringBuffer sb = new StringBuffer();
            
            sb.append(name);
            sb.append("\n");
            sb.append(Resource.getString("Exception"));
            sb.append(": ");
            sb.append(ex.toString());
            displayException(Resource.getString("Cannot access: "), 
                                sb.toString());
        }
    }

    /**
     * Ask the user during an update if they want to keep the old RMS data.
     *
     * @param state current state of the install.
     */
    private void displayKeepRMSForm(InstallState state) {
        Form infoForm;
        String name;
        String desc;
        StringBuffer label = new StringBuffer(40);
        StringBuffer value = new StringBuffer(40);
        String[] values = new String[1];

        name = state.getAppProperty(Installer.SUITE_NAME_PROP);

        try {
            infoForm = new Form(null);

            infoForm.setTitle(Resource.getString("Confirmation"));

            values[0] = name;
            value.append(Resource.getString("Do you want the new version " +
                "of %1 to be able to use the information stored by the " +
                "old version of %1?", values));
            infoForm.append(value.toString());

            infoForm.addCommand(keepRMSCmd);
            infoForm.addCommand(removeRMSCmd);
            infoForm.setCommandListener(this);

            // We need to prevent "flashing" on fast development platforms.
            while (System.currentTimeMillis() - lastDisplayChange <
                   ALERT_TIMEOUT);

            display.setCurrent(infoForm);
        } catch (Exception ex) {
            StringBuffer sb = new StringBuffer();
            
            sb.append(name);
            sb.append("\n");
            sb.append(Resource.getString("Exception"));
            sb.append(": ");
            sb.append(ex.toString());
            displayException(Resource.getString("Cannot access: "), 
                                sb.toString());
        }
    }

    /**
     * Resume the install to start the JAR download.
     */
    private void startJarDownload() {
        updateProgressForm(backgroundInstaller.url, 0, "Connecting...");

        // redisplay the progress form
        display.setCurrent(progressForm);

        backgroundInstaller.continueInstall = true;
        synchronized (backgroundInstaller) {
            backgroundInstaller.notify();
        }
    }

    /** Confirm the JAR only download with the user. */
    private void displayJarOnlyDownloadConfirmation() {
        Form infoForm;
        StringItem item;
        StringBuffer label = new StringBuffer(40);
        StringBuffer value = new StringBuffer(40);
        String[] values = new String[1];

        try {
            infoForm = new Form(null);

            infoForm.setTitle(Resource.getString("Confirmation"));

            values[0] = backgroundInstaller.name;
            item = new StringItem(null, Resource.getString(
                       "Are you sure you want to install \"%1\"?", values));
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            label.append(Resource.getString("Website"));
            label.append(": ");
            item = new StringItem(label.toString(), backgroundInstaller.url);
            item.setLayout(Item.LAYOUT_NEWLINE_AFTER | Item.LAYOUT_2);
            infoForm.append(item);

            value.append(" \n");
            value.append(Resource.getString("There is no further " +
                "information available for the application."));
            infoForm.append(new StringItem(null, value.toString()));

            infoForm.addCommand(continueCmd);
            infoForm.addCommand(cancelCmd);
            infoForm.setCommandListener(this);

            // We need to prevent "flashing" on fast development platforms.
            while (System.currentTimeMillis() - lastDisplayChange <
                   ALERT_TIMEOUT);

            display.setCurrent(infoForm);
        } catch (Exception ex) {
            StringBuffer sb = new StringBuffer();
            
            sb.append(backgroundInstaller.name);
            sb.append("\n");
            sb.append(Resource.getString("Exception"));
            sb.append(": ");
            sb.append(ex.toString());
            displayException(Resource.getString("Cannot access: "), 
                             sb.toString());
        }
    }

    /**
     * Tell the background installer to keep the RMS data.
     *
     * @param keepRMS set to true to mean the user answered yes
     */
    private void setKeepRMSAnswer(boolean keepRMS) {
        // redisplay the progress form
        display.setCurrent(progressForm);

        // We need to prevent "flashing" on fast development platforms.
        while (System.currentTimeMillis() - lastDisplayChange <
               ALERT_TIMEOUT);

        backgroundInstaller.continueInstall = keepRMS;
        synchronized (backgroundInstaller) {
            backgroundInstaller.notify();
        }
    }

    /**
     * Alert the user that an action was successful.
     *
     * @param successMessage message to display to user
     */
    private void displaySuccessMessage(String successMessage) {
        Image icon;
        Alert successAlert;

        icon = getIconFromStorage(
                       (colorDisplay ? "_dukeok8.png" : "_dukeok2.png"));

        successAlert = new Alert(null, successMessage, icon, null);

        successAlert.setTimeout(ALERT_TIMEOUT);

        // We need to prevent "flashing" on fast development platforms.
        while (System.currentTimeMillis() - lastDisplayChange <
               ALERT_TIMEOUT);

        lastDisplayChange = System.currentTimeMillis();
        display.setCurrent(successAlert);
    }

    /**
     * Alert the user that an action was canceled. The backgroundInstaller
     * will hide the message.
     * @param message message to display to user
     */
    private void displayCancelledMessage(String message) {
        Form form;
        Image icon;

        form = new Form(null);

        icon = getIconFromStorage(
                       (colorDisplay ? "_ack_8.png" : "_ack_2.png"));
        form.append(new ImageItem(null, icon, ImageItem.LAYOUT_CENTER +
                                     ImageItem.LAYOUT_NEWLINE_BEFORE +
                                     ImageItem.LAYOUT_NEWLINE_AFTER, null));

        form.append(message);

        display.setCurrent(form);
        lastDisplayChange = System.currentTimeMillis();
    }

    /**
     * Display an exception to the user, with a done command.
     *
     * @param title exception form's title