Пример #1
0
        /// <summary>
        /// Saves the scheme to the specified file.
        /// </summary>
        public bool SaveToFile(string fileName, out string errMsg)
        {
            try
            {
                XmlDocument    xmlDoc  = new();
                XmlDeclaration xmlDecl = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null);
                xmlDoc.AppendChild(xmlDecl);

                // view title
                XmlElement rootElem = xmlDoc.CreateElement("SchemeView");
                rootElem.SetAttribute("title", SchemeDoc.Title);
                xmlDoc.AppendChild(rootElem);

                // scheme document
                XmlElement documentElem = xmlDoc.CreateElement("Scheme");
                rootElem.AppendChild(documentElem);
                SchemeDoc.SaveToXml(documentElem);

                // scheme components
                HashSet <string> prefixes       = new();
                XmlElement       componentsElem = xmlDoc.CreateElement("Components");
                rootElem.AppendChild(componentsElem);

                foreach (ComponentBase component in Components.Values)
                {
                    if (component is UnknownComponent unknownComponent)
                    {
                        componentsElem.AppendChild(unknownComponent.XmlNode);
                    }
                    else
                    {
                        Type        compType    = component.GetType();
                        CompLibSpec compLibSpec = CompManager.GetSpecByType(compType);

                        // add namespace
                        if (compLibSpec != null && !prefixes.Contains(compLibSpec.XmlPrefix))
                        {
                            rootElem.SetAttribute("xmlns:" + compLibSpec.XmlPrefix, compLibSpec.XmlNs);
                            prefixes.Add(compLibSpec.XmlPrefix);
                        }

                        // create XML element of component
                        XmlElement componentElem = compLibSpec == null?
                                                   xmlDoc.CreateElement(compType.Name) /*standard component*/ :
                                                       xmlDoc.CreateElement(compLibSpec.XmlPrefix, compType.Name, compLibSpec.XmlNs);

                        componentsElem.AppendChild(componentElem);
                        component.SaveToXml(componentElem);
                    }
                }

                // scheme images
                XmlElement imagesElem = xmlDoc.CreateElement("Images");
                rootElem.AppendChild(imagesElem);

                foreach (Image image in SchemeDoc.Images.Values)
                {
                    XmlElement imageElem = xmlDoc.CreateElement("Image");
                    imagesElem.AppendChild(imageElem);
                    image.SaveToXml(imageElem);
                }

                xmlDoc.Save(fileName);
                errMsg = "";
                return(true);
            }
            catch (Exception ex)
            {
                errMsg = ex.BuildErrorMessage(CommonPhrases.SaveViewError);
                return(false);
            }
        }
Пример #2
0
        /// <summary>
        /// Loads the view from the specified stream.
        /// </summary>
        public override void LoadView(Stream stream)
        {
            // add template bindings as resource
            if (!string.IsNullOrEmpty(templateArgs.BindingFileName))
            {
                Resources.Add(new ViewResource
                {
                    Name = nameof(TemplateBindings),
                    Path = templateArgs.BindingFileName
                });
            }

            // load XML document
            XmlDocument xmlDoc = new();

            xmlDoc.Load(stream);

            // check data format
            XmlElement rootElem = xmlDoc.DocumentElement;

            if (!rootElem.Name.Equals("SchemeView", StringComparison.OrdinalIgnoreCase))
            {
                throw new ScadaException(CommonPhrases.InvalidFileFormat);
            }

            // load scheme document
            if (rootElem.SelectSingleNode("Scheme") is XmlNode schemeNode)
            {
                SchemeDoc.LoadFromXml(schemeNode);

                // update scheme title
                if (string.IsNullOrEmpty(Title) && !string.IsNullOrEmpty(SchemeDoc.Title))
                {
                    Title = SchemeDoc.Title;
                }
            }

            // load scheme components
            if (rootElem.SelectSingleNode("Components") is XmlNode componentsNode)
            {
                HashSet <string> errNodeNames = new(); // node names of unloaded components
                LoadErrors.AddRange(CompManager.LoadErrors);

                foreach (XmlNode compNode in componentsNode.ChildNodes)
                {
                    // create component
                    ComponentBase component = CompManager.CreateComponent(compNode, out string errMsg);

                    if (component == null)
                    {
                        component = new UnknownComponent {
                            XmlNode = compNode
                        };
                        if (errNodeNames.Add(compNode.Name))
                        {
                            LoadErrors.Add(errMsg);
                        }
                    }

                    // load component and add it to view
                    component.SchemeView = this;
                    component.LoadFromXml(compNode);
                    Components[component.ID] = component;

                    // get max component ID
                    if (component.ID > maxComponentID)
                    {
                        maxComponentID = component.ID;
                    }
                }
            }

            // load scheme images
            if (rootElem.SelectSingleNode("Images") is XmlNode imagesNode)
            {
                Dictionary <string, Image> images = SchemeDoc.Images;
                XmlNodeList imageNodes            = imagesNode.SelectNodes("Image");
                foreach (XmlNode imageNode in imageNodes)
                {
                    Image image = new();
                    image.LoadFromXml(imageNode);
                    if (!string.IsNullOrEmpty(image.Name))
                    {
                        images[image.Name] = image;
                    }
                }
            }
        }