main.qml Example File

    /* Copyright (c) 2012, 2013  BlackBerry Limited.
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    import bb.cascades 1.0
    import bb.data 1.0

    NavigationPane {
        id: navPane

        onPopTransitionEnded: page.destroy()

        // The main page
        Page {
            Container {
                layout: DockLayout {}

                ImageView {
                    horizontalAlignment: HorizontalAlignment.Fill
                    verticalAlignment: VerticalAlignment.Fill

                    imageSource: "asset:///images/background.png"
                }

                Container {
                    horizontalAlignment: HorizontalAlignment.Fill
                    verticalAlignment: VerticalAlignment.Fill

                    Container {
                        horizontalAlignment: HorizontalAlignment.Center
                        layout: DockLayout {}

                        ImageView {
                            horizontalAlignment: HorizontalAlignment.Fill
                            verticalAlignment: VerticalAlignment.Fill

                            imageSource: "asset:///images/header_background.png"
                        }

                        Label {
                            horizontalAlignment: HorizontalAlignment.Center

                            text: qsTr ("RSS News Feeds")
                            textStyle.base: SystemDefaults.TextStyles.BigText
                            textStyle.color: Color.create("#bbffffff")
                        }
                    }

                    // A control to switch between the two news sources
                    SegmentedControl {
                        id: newsSources

                        options: [
                            Option {
                                text: qsTr ("Google")
                                value: "googlerssfeeds.json"
                            },
                            Option {
                                text: qsTr ("Yahoo!")
                                value: "yahoorssfeeds.json"
                            }
                        ]

                        onSelectedOptionChanged: {
                            if (selectedOption != 0) {
                                feedsDataSource.source = selectedOption.value;
                                feedsDataSource.load();
                            }
                        }

                        onCreationCompleted: {
                            if (selectedOption != 0) {
                                feedsDataSource.source = selectedOption.value;
                                feedsDataSource.load();
                            }
                        }
                    }

                    // A list view that shows all the categories of a news source
                    ListView {
                        dataModel: feedsDataModel

                        listItemComponents: [
                            ListItemComponent {
                                type: "item"
                                Container {
                                    leftPadding: 30
                                    preferredWidth: 768
                                    preferredHeight: 100

                                    layout: DockLayout {}

                                    Label {
                                        verticalAlignment: VerticalAlignment.Center

                                        text: ListItemData.name

                                        textStyle.base: SystemDefaults.TextStyles.TitleText
                                        textStyle.color: Color.White
                                    }

                                    Divider {
                                        verticalAlignment: VerticalAlignment.Bottom
                                    }
                                }
                            }
                        ]

                        onTriggered: {
                            var feedItem = feedsDataModel.data(indexPath);
                            articlesDataSource.source = "http://" + feedItem.feed;
                            articlesDataSource.load();

                            var page = newsListings.createObject();
                            page.title = newsSources.selectedOption.text + ": " + feedItem.name
                            navPane.push(page);
                        }
                    }
                }
            }
        }

        attachedObjects: [
            // The data model that contains the content of a JSON file
            GroupDataModel {
                id: feedsDataModel
                sortingKeys: ["order"]
                grouping: ItemGrouping.None
            },

            // The data source that fills the above model with the content of a JSON file
            DataSource {
                id: feedsDataSource
                source: ""
                onDataLoaded: {
                    feedsDataModel.clear();
                    feedsDataModel.insertList(data);
                }
                onError: {
                    console.log("JSON Load Error: [" + errorType + "]: " + errorMessage);
                }
            },

            // The data model that contains the articles from a RSS feed
            GroupDataModel {
                id: articlesDataModel
                sortingKeys: ["pubDate"]
                sortedAscending: false
                grouping: ItemGrouping.None
            },

            // The data source that fills the above model with the articles
            DataSource {
                id: articlesDataSource
                source: ""
                query: "/rss/channel/item"
                type: DataSource.Xml
                onDataLoaded: {
                    articlesDataModel.clear();
                    articlesDataModel.insertList(data);
                }
                onError: {
                    console.log("RSS Load Error[" + errorType + "]: " + errorMessage);
                }
            },

            // The dynamically loaded page to show the list of articles from a RSS feed
            ComponentDefinition {
                id: newsListings
                Page {
                    property alias title : titleLabel.text

                    Container {
                        layout: DockLayout {}

                        ImageView {
                            horizontalAlignment: HorizontalAlignment.Fill
                            verticalAlignment: VerticalAlignment.Fill

                            imageSource: "asset:///images/background.png"
                        }

                        Container {
                            Container {
                                horizontalAlignment: HorizontalAlignment.Center
                                layout: DockLayout {}

                                ImageView {
                                    horizontalAlignment: HorizontalAlignment.Fill
                                    verticalAlignment: VerticalAlignment.Fill

                                    imageSource: "asset:///images/header_background.png"
                                }

                                Label {
                                    id: titleLabel

                                    horizontalAlignment: HorizontalAlignment.Center

                                    textStyle.base: SystemDefaults.TextStyles.BigText
                                    textStyle.color: Color.create("#bbffffff")
                                }
                            }

                            ListView {
                                dataModel: articlesDataModel
                                listItemComponents: [
                                    ListItemComponent {
                                        type: "item"
                                        ArticleItem {
                                            title: ListItemData.title
                                            pubDate: ListItemData.pubDate
                                        }
                                    }
                                ]
                                onTriggered: {
                                    var feedItem = articlesDataModel.data(indexPath);

                                    var page = detailPage.createObject();
                                    page.htmlContent = feedItem.description;
                                    navPane.push(page);
                                }
                            }
                        }
                    }
                }
            },

            // The dynamically loaded page to show an article in a webview
            ComponentDefinition {
                id: detailPage
                Page {
                    property alias htmlContent: detailView.html

                    Container {
                        ScrollView {
                            scrollViewProperties.scrollMode: ScrollMode.Vertical

                            WebView {
                                id: detailView;
                            }
                        }
                    }
                }
            }
        ]
    }