Split message content into its own module

This is laying some groundwork for the rich text chatbar.

src/messagecontent/BaseMessageComponentChooser.qml

@@ -0,0 +1,185 @@
+// SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+import QtQuick
+import QtQuick.Layouts
+import Qt.labs.qmlmodels
+
+import org.kde.kirigami as Kirigami
+
+import org.kde.neochat
+
+/**
+ * @brief Select a message component based on a MessageComponentType.
+ */
+DelegateChooser {
+    id: root
+
+    /**
+     * @brief The user selected text has changed.
+     */
+    signal selectedTextChanged(string selectedText)
+
+    /**
+     * @brief The user hovered link has changed.
+     */
+    signal hoveredLinkChanged(string hoveredLink)
+
+    signal removeLinkPreview(int index)
+
+    /**
+     * @brief Request more events in the thread be loaded.
+     */
+    signal fetchMoreEvents()
+
+    role: "componentType"
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Author
+        delegate: AuthorComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Text
+        delegate: TextComponent {
+            onSelectedTextChanged: root.selectedTextChanged(selectedText)
+            onHoveredLinkChanged: root.hoveredLinkChanged(hoveredLink)
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Image
+        delegate: ImageComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Video
+        delegate: VideoComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Code
+        delegate: CodeComponent {
+            onSelectedTextChanged: selectedText => {
+                root.selectedTextChanged(selectedText);
+            }
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Quote
+        delegate: QuoteComponent {
+            onSelectedTextChanged: selectedText => {
+                root.selectedTextChanged(selectedText);
+            }
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Audio
+        delegate: AudioComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.File
+        delegate: FileComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Itinerary
+        delegate: ItineraryComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Pdf
+        delegate: PdfPreviewComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Poll
+        delegate: PollComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Location
+        delegate: LocationComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.LiveLocation
+        delegate: LiveLocationComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Encrypted
+        delegate: EncryptedComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Reply
+        delegate: ReplyComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Reaction
+        delegate: ReactionComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.LinkPreview
+        delegate: LinkPreviewComponent {
+            onRemove: index => root.removeLinkPreview(index)
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.LinkPreviewLoad
+        delegate: LinkPreviewLoadComponent {
+            type: LinkPreviewLoadComponent.LinkPreview
+            onRemove: index => root.removeLinkPreview(index)
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.ChatBar
+        delegate: ChatBarComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.ReplyButton
+        delegate: ReplyButtonComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.FetchButton
+        delegate: FetchButtonComponent {
+            onFetchMoreEvents: root.fetchMoreEvents()
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Verification
+        delegate: MimeComponent {
+            mimeIconSource: "security-high"
+            label: i18n("%1 started a user verification", model.author.htmlSafeDisplayName)
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Loading
+        delegate: LoadComponent {}
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Separator
+        delegate: Kirigami.Separator {
+            Layout.fillWidth: true
+            Layout.maximumWidth: Message.maxContentWidth
+        }
+    }
+
+    DelegateChoice {
+        roleValue: MessageComponentType.Other
+        delegate: Item {}
+    }
+}