Support push imports from content hub

It should support multiple imports, but I haven't had a chance to test
that.  The import dialog probably won't be that useful in that case,
especially if there are errors.

The import dialog generaly doesn't show as soon as it should, since the
import processing happens before it has a chance to draw the dialog on
the screen.

Refs #61.

CMakeLists.txt

@@ -68,6 +68,7 @@ if(CLICK_MODE)
     set(EXEC "qmlscene -I ./ ui/main.qml --appargs=\"%f\"")
     configure_file(manifest.json.in ${CMAKE_CURRENT_BINARY_DIR}/manifest.json)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/manifest.json DESTINATION ${DATA_DIR})
+    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/beru.contenthub.json DESTINATION ${DATA_DIR})
     install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/apparmor DESTINATION ${DATA_DIR})
 else(CLICK_MODE)
     set(DATA_DIR ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})

apparmor/beru.access.json

@@ -1,5 +1,5 @@
 {
-    "policy_groups": ["networking", "webview"],
+    "policy_groups": ["networking", "webview", "content_exchange"],
     "policy_version": 1.2,
     "read_path": ["@{HOME}/"]
 }

apparmor/beru.json

@@ -1,4 +1,4 @@
 {
-    "policy_groups": ["networking", "webview"],
+    "policy_groups": ["networking", "webview", "content_exchange"],
     "policy_version": 1.2
 }

beru.contenthub.json

@@ -0,0 +1,3 @@
+{
+    "destination": ["ebooks", "documents"]
+}

manifest.json.in

@@ -4,7 +4,8 @@
     "hooks": {
         "beru": {
             "apparmor": "apparmor/beru@[email protected]",
-            "desktop": "beru.desktop"
+            "desktop": "beru.desktop",
+            "content-hub": "beru.contenthub.json"
         }
     },
     "maintainer": "Robert Schroll <[email protected]>",

ui/CMakeLists.txt

@@ -4,6 +4,7 @@ set(UI_SRC_FILES
     BrowserPage.qml
     DefaultCover.qml
     historystack.js
+    Importer.qml
     LocalBooks.qml
     main.qml
     qmlmessaging.js

ui/Importer.qml

@@ -0,0 +1,91 @@
+/* Copyright 2015 Robert Schroll
+ *
+ * This file is part of Beru and is distributed under the terms of
+ * the GPL. See the file COPYING for full details.
+ */
+
+import QtQuick 2.0
+import Ubuntu.Components 1.1
+import Ubuntu.Components.Popups 1.0
+import Ubuntu.Content 0.1
+
+import "components"
+
+Item {
+    id: importer
+    property bool importError: false
+    property bool openImport: true
+
+    Connections {
+        target: ContentHub
+        onImportRequested: {
+            if (transfer.state === ContentTransfer.Charged)
+                importItems(transfer.items)
+        }
+    }
+
+    Reader {
+        id: importReader
+    }
+
+    function doImport(filename, item) {
+        return function () {
+            var components = filename.split("/").pop().split(".")
+            var ext = components.pop()
+            var dir = filesystem.getDataDir(localBooks.defaultdirname)
+            var basename =components.join(".")
+            var newfilename = basename + "." + ext
+            var i = 0
+            while (filesystem.exists(dir + "/" + newfilename)) {
+                i += 1
+                newfilename = basename + "(" + i + ")." + ext
+            }
+            item.move(dir, newfilename)
+            localBooks.addFile(dir + "/" + newfilename, true)
+            console.log("Importing as " + dir + "/" + newfilename)
+            if (openImport)
+                loadFile(dir + "/" + newfilename)
+        }
+    }
+
+    function importItems(items) {
+        var dialog = PopupUtils.open(importComponent)
+        openImport = (items.length == 1)
+        importError = false
+
+        for (var i=0; i<items.length; i++) {
+            var filename = items[i].url.toString().slice(7)
+            if (importReader.load(filename)) {
+                localBooks.inDatabase(
+                            importReader.hash(),
+                            function (currentfilename) {
+                                if (openImport)
+                                    loadFile(currentfilename)
+                                console.log("This was already imported as " + currentfilename)
+                            },
+                            doImport(filename, items[i]))
+            } else {
+                console.log("Import error: " + importReader.error)
+                importError = true
+            }
+        }
+        if (!importError)
+            PopupUtils.close(dialog)
+    }
+
+    Component {
+        id: importComponent
+        Dialog {
+            id: importDialog
+            title: importError ? i18n.tr("Error Importing File") : i18n.tr("Import in Progress")
+            text: importError ? importReader.error : ""
+            StyledButton {
+                text: i18n.tr("Dismiss")
+                onClicked: {
+                    openImport = false
+                    PopupUtils.close(importDialog)
+                }
+            }
+        }
+    }
+}

ui/LocalBooks.qml

@@ -214,6 +214,17 @@ Page {
         coverTimer.start()
     }
 
+    function inDatabase(hash, existsCallback, newCallback) {
+        var db = openDatabase()
+        db.readTransaction(function (tx) {
+            var res = tx.executeSql("SELECT filename FROM LocalBooks WHERE hash == ?", [hash])
+            if (res.rows.length > 0 && filesystem.exists(res.rows.item(0).filename))
+                existsCallback(res.rows.item(0).filename)
+            else
+                newCallback()
+        })
+    }
+
     function readBookDir() {
         addBookDir()
         listBooks()

ui/main.qml

@@ -100,8 +100,15 @@ MainView {
         id: server
     }
 
+    Importer {
+        id: importer
+    }
+
     function loadFile(filename) {
         if (server.reader.load(filename)) {
+            while (pageStack.currentPage != localBooks)
+                pageStack.pop()
+
             pageStack.push(bookPage, {url: "http://127.0.0.1:" + server.port})
             window.title = server.reader.title()
             localBooks.updateRead(filename)