Method setup

packages/fairygui/src/core/Controller.ts:273–317

* Setup controller from buffer * 从缓冲区设置控制器

(buffer: ByteBuffer)

     * 从缓冲区设置控制器
     */
    public setup(buffer: ByteBuffer): void {
        const beginPos = buffer.pos;
        buffer.seek(beginPos, 0);

        this.name = buffer.readS() || '';
        if (buffer.readBool()) {
            this.autoRadioGroupDepth = true;
        }

        buffer.seek(beginPos, 1);

        const cnt = buffer.getInt16();
        for (let i = 0; i < cnt; i++) {
            this._pageIds.push(buffer.readS() || '');
            this._pageNames.push(buffer.readS() || '');
        }

        // Home page index (simplified - ignore advanced home page types)
        let homePageIndex = 0;
        const homePageType = buffer.readByte();
        if (homePageType === 1) {
            homePageIndex = buffer.getInt16();
        } else if (homePageType === 2 || homePageType === 3) {
            // Skip variable name for type 3
            if (homePageType === 3) {
                buffer.readS();
            }
        }

        buffer.seek(beginPos, 2);

        // Skip actions for now
        const actionCount = buffer.getInt16();
        for (let i = 0; i < actionCount; i++) {
            let nextPos = buffer.getInt16();
            nextPos += buffer.pos;
            buffer.pos = nextPos;
        }

        if (this.parent && this._pageIds.length > 0) {
            this._selectedIndex = homePageIndex;
        } else {
            this._selectedIndex = -1;
        }
    }

    /**
     * Dispose