cmsresourcecomparisondialog.java

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                originalSource = textExtractor.extractText(content1).getContent();
                copySource = textExtractor.extractText(content2).getContent();
            } else if ((resourceType instanceof CmsResourceTypePlain) || (resourceType instanceof CmsResourceTypeJsp)) {
                originalSource = new String(content1);
                copySource = new String(content2);
            }
            fileInfo.writeDialog();
            twoLists.writeDialog();
            if (CmsStringUtil.isNotEmpty(originalSource) && CmsStringUtil.isNotEmpty(copySource)) {
                m_differenceDialog.setCopySource(copySource);
                m_differenceDialog.setOriginalSource(originalSource);
                // same as for CmsImageComparisonDialog
                m_differenceDialog.displayDialog();
            }
        } else {
            // display attributes and properties 
            lists.add(propertyDiff);
            CmsMultiListDialog twoLists = new CmsMultiListDialog(lists);
            twoLists.displayDialog(true);
            if (twoLists.isForwarded()) {
                return;
            }

            fileInfo.writeDialog();
            twoLists.writeDialog();
        }
    }

    /**
     * Displays the difference dialog.<p>
     * @throws Exception if something goes wrong
     */
    public void displayDifferenceDialog() throws Exception {

        m_differenceDialog.displayDialog();
    }

    /**
     * Converts an attribute list to a string.<p>
     * 
     * @param attributes a list of compared attributes to be converted to a string
     * @return a string respresentation of the attribute list
     */
    public String[] getAttributesAsString(List attributes) {

        Iterator i = attributes.iterator();
        StringBuffer res1 = new StringBuffer(512);
        StringBuffer res2 = new StringBuffer(512);
        while (i.hasNext()) {
            CmsAttributeComparison compare = (CmsAttributeComparison)i.next();
            res1.append(key(compare.getName())).append(": ").append(compare.getVersion1()).append("\n");
            res2.append(key(compare.getName())).append(": ").append(compare.getVersion2()).append("\n");
        }
        return new String[] {res1.toString(), res2.toString()};
    }

    /**
     * Returns the paramCompare.<p>
     *
     * @return the paramCompare
     */
    public String getParamCompare() {

        return m_paramCompare;
    }

    /**
     * Returns the paramElement.<p>
     *
     * @return the paramElement
     */
    public String getParamElement() {

        return m_paramElement;
    }

    /**
     * Returns the paramId1.<p>
     *
     * @return the paramId1
     */
    public String getParamId1() {

        return m_paramId1;
    }

    /**
     * Returns the paramId2.<p>
     *
     * @return the paramId2
     */
    public String getParamId2() {

        return m_paramId2;
    }

    /**
     * Returns the paramLocale.<p>
     *
     * @return the paramLocale
     */
    public String getParamLocale() {

        return m_paramLocale;
    }

    /**
     * Returns the paramTextmode.<p>
     *
     * @return the paramTextmode
     */
    public String getParamTextmode() {

        return m_paramTextmode;
    }

    /**
     * Returns the paramVersion1.<p>
     *
     * @return the paramVersion1
     */
    public String getParamVersion1() {

        return m_paramVersion1;
    }

    /**
     * Returns the paramVersion2.<p>
     *
     * @return the paramVersion2
     */
    public String getParamVersion2() {

        return m_paramVersion2;
    }

    /**
     * Converts an attribute list to a string.<p>
     * 
     * @param properties a list of compared properties to be converted to a string
     * @return a string respresentation of the attribute list
     */
    public String[] getPropertiesAsString(List properties) {

        Iterator i = properties.iterator();
        StringBuffer res1 = new StringBuffer(512);
        StringBuffer res2 = new StringBuffer(512);
        while (i.hasNext()) {
            CmsAttributeComparison compare = (CmsAttributeComparison)i.next();
            res1.append(compare.getName()).append(": ").append(compare.getVersion1()).append("\n");
            res2.append(compare.getName()).append(": ").append(compare.getVersion2()).append("\n");
        }
        return new String[] {res1.toString(), res2.toString()};
    }

    /**
     * Sets the paramCompare.<p>
     *
     * @param paramCompare the paramCompare to set
     */
    public void setParamCompare(String paramCompare) {

        m_paramCompare = paramCompare;
    }

    /**
     * Sets the paramElement.<p>
     *
     * @param paramElement the paramElement to set
     */
    public void setParamElement(String paramElement) {

        m_paramElement = paramElement;
    }

    /**
     * Sets the paramId1.<p>
     *
     * @param paramId1 the paramId1 to set
     */
    public void setParamId1(String paramId1) {

        m_paramId1 = paramId1;
    }

    /**
     * Sets the paramId2.<p>
     *
     * @param paramId2 the paramId2 to set
     */
    public void setParamId2(String paramId2) {

        m_paramId2 = paramId2;
    }

    /**
     * Sets the paramLocale.<p>
     *
     * @param paramLocale the paramLocale to set
     */
    public void setParamLocale(String paramLocale) {

        m_paramLocale = paramLocale;
    }

    /**
     * Sets the paramTextmode.<p>
     *
     * @param paramTextmode the paramTextmode to set
     */
    public void setParamTextmode(String paramTextmode) {

        m_paramTextmode = paramTextmode;
    }

    /**
     * Sets the paramVersion1.<p>
     *
     * @param paramVersion1 the paramVersion1 to set
     */
    public void setParamVersion1(String paramVersion1) {

        m_paramVersion1 = paramVersion1;
    }

    /**
     * Sets the paramVersion2.<p>
     *
     * @param paramVersion2 the paramVersion2 to set
     */
    public void setParamVersion2(String paramVersion2) {

        m_paramVersion2 = paramVersion2;
    }

    /**
     * @see org.opencms.workplace.CmsWorkplace#initWorkplaceRequestValues(org.opencms.workplace.CmsWorkplaceSettings, javax.servlet.http.HttpServletRequest)
     */
    protected void initWorkplaceRequestValues(CmsWorkplaceSettings settings, HttpServletRequest request) {

        super.initWorkplaceRequestValues(settings, request);
        try {
            CmsResource resource1 = CmsResourceComparisonDialog.readResource(
                getCms(),
                new CmsUUID(getParamId1()),
                getParamVersion1());
            CmsResource resource2 = CmsResourceComparisonDialog.readResource(
                getCms(),
                new CmsUUID(getParamId2()),
                getParamVersion2());
            // if certain element is compared, use html difference dialog
            if (CmsStringUtil.isNotEmpty(getParamElement())) {
                m_differenceDialog = new CmsHtmlDifferenceDialog(getJsp());
            } else {
                m_differenceDialog = new CmsDifferenceDialog(getJsp());
            }
            if (CmsResourceComparisonDialog.COMPARE_ATTRIBUTES.equals(getParamCompare())) {
                List comparedAttributes = CmsResourceComparison.compareAttributes(getCms(), resource1, resource2);
                String[] attributeStrings = getAttributesAsString(comparedAttributes);
                m_differenceDialog.setOriginalSource(attributeStrings[0]);
                m_differenceDialog.setCopySource(attributeStrings[1]);
            } else if (CmsResourceComparisonDialog.COMPARE_PROPERTIES.equals(getParamCompare())) {
                List comparedProperties = CmsResourceComparison.compareProperties(
                    getCms(),
                    resource1,
                    getParamVersion1(),
                    resource2,
                    getParamVersion2());
                String[] propertyStrings = getPropertiesAsString(comparedProperties);
                m_differenceDialog.setOriginalSource(propertyStrings[0]);
                m_differenceDialog.setCopySource(propertyStrings[1]);
            } else if (resource1.isFile()) {
                CmsFile file1 = readFile(getCms(), new CmsUUID(getParamId1()), getParamVersion1());
                CmsFile file2 = readFile(getCms(), new CmsUUID(getParamId2()), getParamVersion2());
                setContentAsSource(file1, file2);
            }
        } catch (CmsException e) {
            LOG.error(e.getMessage(), e);
        } catch (UnsupportedEncodingException e) {
            LOG.error(e.getMessage(), e);
        }
    }

    /** 
     * Returns the content of all elements of an xml document appended.<p>
     * 
     * @param xmlDoc the xml document to extract the elements from
     * @return the content of all elements of an xml document appended
     */
    private String extractElements(I_CmsXmlDocument xmlDoc) {

        StringBuffer result = new StringBuffer();
        if (xmlDoc instanceof CmsXmlPage) {
            List locales = xmlDoc.getLocales();
            Iterator i = locales.iterator();
            boolean firstIter = true;
            while (i.hasNext()) {
                if (!firstIter) {
                    result.append("\n\n-----");
                }
                Locale locale = (Locale)i.next();
                result.append("\n\n[").append(locale.toString()).append(']');
                List elements = xmlDoc.getValues(locale);
                Iterator j = elements.iterator();
                while (j.hasNext()) {
                    I_CmsXmlContentValue value = (I_CmsXmlContentValue)j.next();
                    result.append("\n\n[");
                    // output value of name attribute
                    result.append(value.getElement().attribute(0).getValue());
                    result.append("]\n\n");
                    try {
                        I_CmsWidget widget = value.getDocument().getContentDefinition().getContentHandler().getWidget(
                            value);
                        result.append(widget.getWidgetStringValue(
                            getCms(),
                            new CmsResourceInfoDialog(getJsp()),
                            (I_CmsWidgetParameter)value));
                    } catch (CmsXmlException e) {
                        LOG.error(e.getMessage(), e);
                    }
                }
                firstIter = false;
            }
        } else if (xmlDoc instanceof CmsXmlContent) {
            CmsXmlContentTextExtractor visitor = new CmsXmlContentTextExtractor(result);
            ((CmsXmlContent)xmlDoc).visitAllValuesWith(visitor);

        }
        return result.toString();
    }

    /**
     * Extracts the content from the files according to the file type.<p>
     * 
     * @param file1 the first file to compare
     * @param file2 the second file to compare
     * 
     * @throws CmsException if something goes wrong
     * @throws UnsupportedEncodingException if the encoding of one file is not supported
     */
    private void setContentAsSource(CmsFile file1, CmsFile file2) throws CmsException, UnsupportedEncodingException {

        CmsObject cms = getCms();
        if (CmsStringUtil.isNotEmpty(getParamElement())) {
            I_CmsXmlDocument resource1;
            I_CmsXmlDocument resource2;
            if (CmsResourceTypeXmlPage.isXmlPage(file1)) {
                resource1 = CmsXmlPageFactory.unmarshal(cms, file1);
            } else {
                resource1 = CmsXmlContentFactory.unmarshal(cms, file1);
            }
            if (CmsResourceTypeXmlPage.isXmlPage(file2)) {
                resource2 = CmsXmlPageFactory.unmarshal(cms, file2);
            } else {
                resource2 = CmsXmlContentFactory.unmarshal(cms, file2);
            }
            I_CmsXmlContentValue value1 = resource1.getValue(getParamElement(), new Locale(getParamLocale()));
            I_CmsXmlContentValue value2 = resource2.getValue(getParamElement(), new Locale(getParamLocale()));
            if (value1 == null) {
                m_differenceDialog.setOriginalSource("");
            } else {
                m_differenceDialog.setOriginalSource(value1.getStringValue(cms));
            }
            if (value2 == null) {
                m_differenceDialog.setCopySource("");
            } else {
                m_differenceDialog.setCopySource(value2.getStringValue(cms));
            }
        } else if (CmsResourceComparisonDialog.COMPARE_ALL_ELEMENTS.equals(getParamCompare())) {
            I_CmsXmlDocument resource1;
            I_CmsXmlDocument resource2;
            if (CmsResourceTypeXmlPage.isXmlPage(file1)) {
                resource1 = CmsXmlPageFactory.unmarshal(cms, file1);
            } else {
                resource1 = CmsXmlContentFactory.unmarshal(cms, file1);
            }
            if (CmsResourceTypeXmlPage.isXmlPage(file2)) {
                resource2 = CmsXmlPageFactory.unmarshal(cms, file2);
            } else {
                resource2 = CmsXmlContentFactory.unmarshal(cms, file2);
            }
            m_differenceDialog.setOriginalSource(extractElements(resource1));
            m_differenceDialog.setCopySource(extractElements(resource2));

        } else {
            // compare whole plain text file
            m_differenceDialog.setOriginalSource(new String(file1.getContents(), cms.getRequestContext().getEncoding()));
            m_differenceDialog.setCopySource(new String(file2.getContents(), cms.getRequestContext().getEncoding()));
        }
    }
}